Merlin Hamer, M.D.
NPI 1124233820 · Orthopaedic Hand Surgery Physician · La Jolla, CA
Enrolled with Medicare as Practitioner - Hand Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Merlin Hamer, M.D. is a Orthopaedic Hand Surgery Physician provider in La Jolla, CA (NPI 1124233820).
Provider details
- NPI number
- 1124233820
- Entity type
- Individual
- Primary specialty
- Orthopaedic Hand Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A105394 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,353 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection Into Tendon Or Ligament20550 | 492 | $58 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 396 | $176 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 374 | $137 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 276 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 174 | $97 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 25 | 24 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-14
- Last updated
- 2018-06-13
Frequently asked questions
- What is Merlin Hamer's NPI number?
- Merlin Hamer's National Provider Identifier (NPI) is 1124233820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Merlin Hamer's specialty?
- Merlin Hamer is listed in the NPPES registry with a primary specialty of Orthopaedic Hand Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Merlin Hamer located?
- Merlin Hamer's practice location on file with NPPES is 10666 N. Torrey Pines Rd., La Jolla, CA 92037.
- What is Merlin Hamer's phone number?
- The practice phone number listed in the NPPES registry for Merlin Hamer is (858) 554-7989.
- Does Merlin Hamer accept Medicare?
- Merlin Hamer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Merlin Hamer's NPI active?
- Yes — Merlin Hamer's NPI (1124233820) is active in the NPPES registry as of the last update on 2018-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.