Gregory Mcdermott, MD
NPI 1184005506 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Mcdermott, MD is a Rheumatology Physician provider in Boston, MA (NPI 1184005506).
Provider details
- NPI number
- 1184005506
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L-263646 (MA)
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
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
111 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 82 | $97 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $98 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 11 | $138 |
Typical Medicare-allowed amounts for these services range $97–$138 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 77 | 28 |
| Diclofenac Sodium | 30 | — |
| Tocilizumabbrand: Actemra | 27 | — |
| Methotrexate Sodiumbrand: Methotrexate | 25 | — |
| Allopurinol | 21 | — |
| Hydroxychloroquine Sulfate | 20 | — |
| Methylprednisolone | 20 | — |
Practice location
Mailing address
Additional practice locations (1)
- Massachusetts General Hospital55 Fruit St.Boston, MA 02114Phone: (617) 726-7930
Registry dates
- Enumerated
- 2015-06-11
- Last updated
- 2023-05-25
- Certified
- 2023-05-25
Frequently asked questions
- What is Gregory Mcdermott's NPI number?
- Gregory Mcdermott's National Provider Identifier (NPI) is 1184005506, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Mcdermott's specialty?
- Gregory Mcdermott is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Mcdermott located?
- Gregory Mcdermott's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Gregory Mcdermott's phone number?
- The practice phone number listed in the NPPES registry for Gregory Mcdermott is (617) 732-5500.
- Does Gregory Mcdermott accept Medicare?
- Gregory Mcdermott is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Mcdermott's NPI active?
- Yes — Gregory Mcdermott's NPI (1184005506) is active in the NPPES registry as of the last update on 2023-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.