Gregory Adamson, M.D.
NPI 1972590610 · Sports Medicine (Orthopaedic Surgery) Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Sports Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Adamson, M.D. is a Sports Medicine (Orthopaedic Surgery) Physician provider in Pasadena, CA (NPI 1972590610).
Provider details
- NPI number
- 1972590610
- Entity type
- Individual
- Primary specialty
- Sports Medicine (Orthopaedic Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G58923 (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
20 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
1,077 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 238 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 213 | $138 |
| X-Ray of Shoulder, Minimum of 2 Views73030 | 139 | $39 |
| X-Ray of Knee, 1-2 Views73560 | 113 | $39 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 97 | $88 |
| X-Ray of Both Knees While Standing73565 | 86 | $45 |
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 |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 30 |
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
- 2005-09-27
- Last updated
- 2024-03-04
- Certified
- 2024-03-04
Frequently asked questions
- What is Gregory Adamson's NPI number?
- Gregory Adamson's National Provider Identifier (NPI) is 1972590610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Adamson's specialty?
- Gregory Adamson is listed in the NPPES registry with a primary specialty of Sports Medicine (Orthopaedic Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Adamson located?
- Gregory Adamson's practice location on file with NPPES is 800 S Raymond Ave, Pasadena, CA 91105-3229.
- What is Gregory Adamson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Adamson is (626) 795-8051.
- Does Gregory Adamson accept Medicare?
- Gregory Adamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Adamson's NPI active?
- Yes — Gregory Adamson's NPI (1972590610) is active in the NPPES registry as of the last update on 2024-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.