Marc Phillpotts, M.D.
NPI 1518300151 · Rheumatology Physician · Washington, DC
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Phillpotts, M.D. is a Rheumatology Physician provider in Washington, DC (NPI 1518300151).
Provider details
- NPI number
- 1518300151
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD044077 (DC)
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 tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,735 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 466 | $18 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 316 | $10 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 284 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 277 | $142 |
| Measurement of Antibody for Assessment of Autoimmune Disorder, Any Method86235 | 242 | $18 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 79 | 28 |
| Alendronate Sodium | 33 | 17 |
| Methotrexate Sodiumbrand: Methotrexate | 30 | 13 |
| Adalimumabbrand: Humira(cf) Pen | 21 | — |
| Celecoxib | 20 | 11 |
| Methylprednisolone | 20 | 17 |
| Allopurinol | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$141 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-04-13
- Last updated
- 2026-01-21
- Certified
- 2026-01-21
Frequently asked questions
- What is Marc Phillpotts's NPI number?
- Marc Phillpotts's National Provider Identifier (NPI) is 1518300151, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Phillpotts's specialty?
- Marc Phillpotts is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Phillpotts located?
- Marc Phillpotts's practice location on file with NPPES is 2021 K St Nw Ste 300, Washington, DC 20006-1012.
- What is Marc Phillpotts's phone number?
- The practice phone number listed in the NPPES registry for Marc Phillpotts is (301) 942-7600.
- Does Marc Phillpotts accept Medicare?
- Marc Phillpotts is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Phillpotts's NPI active?
- Yes — Marc Phillpotts's NPI (1518300151) is active in the NPPES registry as of the last update on 2026-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.