James Loomis, MD
NPI 1528153160 · Internal Medicine Physician · Washington, DC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Loomis, MD is a Internal Medicine Physician provider in Washington, DC (NPI 1528153160).
Provider details
- NPI number
- 1528153160
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R8G21 (MO)
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
323 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 | 85 | $101 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 62 | $143 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 57 | $21 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 54 | $21 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $137 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 70 | 21 |
| Amlodipine Besylate | 49 | 19 |
| Atorvastatin Calcium | 46 | 17 |
| Rsvpref3 Antigen/As01e/Pfbrand: Arexvy | 35 | 35 |
| Rosuvastatin Calcium | 25 | — |
| Metformin Hclbrand: Metformin Hcl Er | 23 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2016-03-31
Frequently asked questions
- What is James Loomis's NPI number?
- James Loomis's National Provider Identifier (NPI) is 1528153160, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Loomis's specialty?
- James Loomis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Loomis located?
- James Loomis's practice location on file with NPPES is 5100 Wisconsin Ave Nw, Washington, DC 20016-4119.
- What is James Loomis's phone number?
- The practice phone number listed in the NPPES registry for James Loomis is (202) 527-7500.
- Does James Loomis accept Medicare?
- James Loomis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Loomis's NPI active?
- Yes — James Loomis's NPI (1528153160) is active in the NPPES registry as of the last update on 2016-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.