Oliver y Alcázar
According to our open methodology, this clinic scored 60.7/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #13 of 27 ranked clinics · Last checked: 25 August 2026
Positions by Rating Profile
- Overall Transparency & Trust#1360.7/100
- Best for Expats#1656.8/100
- Best for Dental Implants#1257.7/100
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#1144.3/100
- Best English-speaking Clinicsnot ranked
- Best for Families / Children#1361.9/100
- Sleep Dentistry (GA / deep sedation)not ranked
General Anaesthesia & Deep Sedation
Whether the clinic documents treatment under general anaesthesia or deep / twilight sedation — "sleep dentistry", where the patient is asleep and unaware (does not feel, see, or hear the procedure). Ordinary conscious sedation, where the patient stays awake and responsive, does not count here. This is informational and does not affect the transparency score.
- ✗ General anaesthesia / deep sedation (sleep dentistry) — No general anaesthesia or deep sedation documented Conscious IV sedation supervised by anaesthetist + nitrous oxide; patient stays awake and responsive. [oliver-y-alcazar-sedation]
Summary
Dental clinic in the Salamanca district offering a wide range of implantology techniques, orthodontics (Invisalign, Spark, lingual), aesthetics, periodontics, oral surgery and pediatric care, with an English-language page.
Site uses promotional claims such as an 'Implantologist of the Year' award and a 99% satisfaction figure.
Strengths
- Information Transparency: 18 of 20 points.
Weaknesses
- Price Transparency: 2 of 15 verifiable points (missing: prices or price ranges published; cleaning price listed; filling price listed; crown price listed; implant price listed; x-ray / imaging price listed)
Score Breakdown
Every criterion below is scored from public sources. ✓ verified yes · ✗ verified no / not found · ◐ partial · ? unverified (scores 0, not a negative finding).
Information Transparency
Whether basic facts about the clinic - its team, premises, services, and location - are publicly verifiable.
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
Reputation & Reviews
Public review signals. The Google rating is adjusted with a Bayesian prior (rating 4.0, weight 25) so a 5.0 from a handful of reviews does not outrank a 4.8 from hundreds.
| ◐ | Google rating (Bayesian-adjusted) as of 2026-08-25 [oliver-y-alcazar-refresh] | 5/6 |
| ◐ | Google review volume [oliver-y-alcazar-refresh] | 2/3 |
| ✓ | Review recency [oliver-y-alcazar-refresh-tw] | 3/3 |
| ✓ | Clinic responds to reviews Owner replies to reviews on the Google listing: 3 of the 5 newest reviews answered, owner reply dated 2026-07-08 (read 2026-09-26). [oliver-y-alcazar-gbp-2026-09-26] | 2/2 |
| ? | No recurring complaints | 0/2 |
| ? | No suspicious review patterns | 0/2 |
| ✓ | Active Facebook presence [s1] | 1/1 |
| ? | TripAdvisor presence | 0/0.5 |
| ✓ | Other review platforms Listed on DocDental, esopiniones, Dentalisto. [s2] | 0.5/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✓ | WhatsApp / LINE available Chat feature mentioned. [s1] | 2/2 |
| ? | Response speed | 0/1.5 |
| ? | English spoken English page exists; spoken English not explicitly confirmed. | 0/2.5 |
| ✓ | Pre-visit consultation possible Free first consultation. [s1] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ? | Convenient opening hours | 0/1.5 |
AI & Search Visibility
Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist Spain", "English speaking dentist Spain", "dental implants Spain", "emergency dentist Spain", "Spain dental clinic for expats".
| ✗ | Mentioned for: best dentist Spain [sq] | 0/1 |
| ✗ | Mentioned for: English speaking dentist Spain [sq] | 0/1 |
| ✓ | Mentioned for: dental implants Spain [sq] | 1/1 |
| ✗ | Mentioned for: emergency dentist Spain [sq] | 0/1 |
| ✗ | Mentioned for: Spain dental clinic for expats [sq] | 0/1 |
| ✓ | Structured data on website JSON-LD on the homepage declares Organization and Dentist. [oliver-y-alcazar-deepen] | 1.5/1.5 |
| ✓ | Google indexing quality [sq] | 2/2 |
| ✓ | Dedicated service pages [s1] | 1.5/1.5 |
Licensing & Credentials
Whether the clinic publishes its operating licence and the dentists working there together with their professional licence numbers. A verified “not published” is recorded as a red flag; data we have not checked yet is shown as unverified and carries no penalty.
Clinic operating licence: not checked against public sources yet — unverified, no penalty
Dentists & professional licences
| Dentist | Specialization | Licence No. |
|---|---|---|
| Dr. Carlos Gómez Alcázar [s1] [oliver-y-alcazar-doclic] | Implantology | 28009898 |
| Dr. Carlos Gómez Oliver [s1] [oliver-y-alcazar-doclic-2] | — | 28032165 |
| Dra. Marta Cassinello Bachiller [s1] [oliver-y-alcazar-doclic-3] [oliver-y-alcazar-coem] | — | 28014161 |
| Dra. Rose Mary Sánchez Allegue [s1] [oliver-y-alcazar-doclic-4] | — | 28015627 |
| Dra. Carolina Orrego Fernández [s1] [oliver-y-alcazar-doclic-5] | — | 28016381 |
Red Flags
- low Aggressive marketing practices (-1 pts) — Website uses promotional superlatives such as an 'Implantologist of the Year' award and a '99% patient satisfaction' figure. [s1]
Red-flag penalty applied: -1 points (capped at -20).
Data We Could Not Verify
- Information Transparency: Real clinic photos
- Reputation & Reviews: No recurring complaints
- Reputation & Reviews: No suspicious review patterns
- Reputation & Reviews: TripAdvisor presence
- Medical Infrastructure: CBCT (3D imaging)
- Medical Infrastructure: Emergency care
- Communication & Service: Response speed
- Communication & Service: English spoken
- Communication & Service: Convenient opening hours
Unverified items score 0 points but are not treated as negative findings. If you can document any of them, please send a correction.
Contact Information
| Website | https://oliveryalcazar.com/ |
|---|---|
| Phone | +34 91 564 66 86 |
| https://www.facebook.com/OliveryAlcazar | |
| Google Maps | Map listing |
| Address | C/ Velázquez, 89, Barrio Salamanca, 28006 Madrid, Spain |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://oliveryalcazar.com/ | Address, contacts, dentist names, services, Google Maps, rating claim, marketing claims. | 2026-07-12 |
| s2 | https://oopiniones.com/dentistas-madrid-oliver-alcazar-192412 | Third-party rating ~4.6-4.7 and review presence. | 2026-07-12 |
| sq | search:dental implants Madrid / dentist Madrid | AI/search visibility scout 2026-07-12 | 2026-07-12 |
| oliver-y-alcazar-sedation | https://oliveryalcazar.com/cirugia-bucal/sedacion-consciente/presen… | IV conscious sedation with anaesthetist; patient conscious throughout, not general anaesthesia | 2026-08-23 |
| oliver-y-alcazar-refresh | https://www.google.com/maps/place/Oliver+y+Alc%C3%A1zar+dental+Madrid | Google Search knowledge panel (live Maps data embedded in SERP) shows 4.7★ (164 reviews) as of 2026-08-25; the Maps page itself was not accessible directly, so the panel embed was used instead. | 2026-08-25 |
| oliver-y-alcazar-doclic | https://guiadentistas.es/detail.php?numcol=28009898 | searched: Apellido1=Alcazar (GuiaDentistas) — CARLOS GOMEZ ALCAZAR, colegiado Madrid (28). | 2026-08-26 |
| oliver-y-alcazar-doclic-2 | https://guiadentistas.es/detail.php?numcol=28032165 | searched: Apellido1=Oliver, Nombre=Carlos (GuiaDentistas) — CARLOS ENRIQUE GOMEZ OLIVER, colegiado Madrid (28). | 2026-08-26 |
| oliver-y-alcazar-doclic-3 | https://guiadentistas.es/results.php | searched: Apellido1=Cassinello (0 results) and Apellido1=Bachiller (0 results) on GuiaDentistas (national, open, dentist-scope registry) — no colegiado found under either surname, 2026-08-26. | 2026-08-26 |
| oliver-y-alcazar-doclic-4 | https://guiadentistas.es/detail.php?numcol=28015627 | searched: Apellido1=Allegue (GuiaDentistas) — exact match ROSE MARY SANCHEZ ALLEGUE, colegiada Madrid (28). | 2026-08-26 |
| oliver-y-alcazar-doclic-5 | https://guiadentistas.es/detail.php?numcol=28016381 | searched: Apellido1=Fernandez, Nombre=Carolina (GuiaDentistas) — exact match CAROLINA DEL PILAR ORREGO FERNANDEZ, colegiada Madrid (28). | 2026-08-26 |
| oliver-y-alcazar-coem | https://coem.org.es/registro-de-colegiados-y-sociedades/directorio-… | Directorio de colegiados of COEM, the Madrid dental college — the register this clinic's dentists are colegiados of. The twin card madrid-dental recorded Nº 28014161 for this dentist from this directory on 2026-08-25; on the four sibling rows of this same card the COEM numbers and the GuiaDentistas numbers agree exactly (28009898, 28032165, 28015627, 28016381). Recorded here 2026-09-10 from the twin card; the directory was not re-read on that date. | 2026-08-25 |
| oliver-y-alcazar-refresh-tw | https://www.google.com/maps/place/Oliver+%26+Alc%C3%A1zar/@40.43415… | most recent review approx. 3 months ago (top displayed review) | 2026-08-25 |
| oliver-y-alcazar-gbp-2026-09-26 | https://www.google.com/maps?cid=13431465717800053656&hl=en | Google listing read on 2026-09-26: rating 4.7 from 164 reviews; star histogram 1★ 11 / 2★ 1 / 3★ 0 / 4★ 3 / 5★ 149; newest review dated 2026-07-29; 3 of the 5 newest reviews carry an owner reply, latest dated 2026-07-08. | 2026-09-26 |
| oliver-y-alcazar-deepen | https://oliveryalcazar.com/ | Homepage HTML read on 2026-10-02: JSON-LD declares the types Organization and Dentist, alongside WebSite and WebPage. | 2026-10-02 |
Change History
| Date | Change |
|---|---|
| 2026-10-02 | Read the clinic's website HTML on 2026-10-02: structured data: present. |
| 2026-09-29 | Corrected 2026-09-29: owner replies to reviews confirmed on the Google listing (owner reply dated 2026-07-08). |
| 2026-09-17 | Aligned with the clinic's entry on madriddentalrating.com: recorded Review recency (within_3_months) from sources read on 2026-08-25. |
| 2026-09-10 | Twin parity with madrid-dental (same clinic): this dentist was published as having no licence number because the national GuiaDentistas directory lists neither of her surnames, while the twin card publishes Nº 28014161 from COEM, the Madrid college's own register, whose numbers agree with GuiaDentistas exactly on the card's other four dentists. The number is now published on both cards and both readings are cited. |
| 2026-08-26 | License verification 2026-08-26: 4 of 5 named doctors found colegiado numbers via GuiaDentistas; Marta Cassinello Bachiller verified false (no match under either surname, 2 variants). Clinic REGCESS lookup inconclusive, left null. |
| 2026-08-25 | Re-verification 2026-08-25: confirmed website, address, phone unchanged; Google rating steady at 4.7, review count up 90->164. |
| 2026-08-23 | Recorded sedation / general anaesthesia availability (informational): not documented in public sources. Conscious IV sedation supervised by anaesthetist + nitrous oxide; patient stays awake and responsive. |
| 2026-08-18 | Imported from the city-tier dataset (data originally collected 2026-07-12). |
A question or a correction?
Have a question, a suggestion, or a correction to this page? Get in touch — we read every message. Verified data corrections are reviewed against sources and applied with a public change-history entry.