Benjamin Oldfield, M.D.
NPI 1831465830 · Internal Medicine Physician · Washington, DC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Oldfield, M.D. is a Internal Medicine Physician provider in Washington, DC (NPI 1831465830).
Provider details
- NPI number
- 1831465830
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD600003217 (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 tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 109 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 227 | 51 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 170 | 38 |
| Gabapentin | 135 | 19 |
| Lisinopril | 122 | 30 |
| Amlodipine Besylate | 121 | 27 |
| Metformin Hcl | 117 | 23 |
| Semaglutide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-03-24
- Last updated
- 2025-01-17
- Certified
- 2025-01-17
Frequently asked questions
- What is Benjamin Oldfield's NPI number?
- Benjamin Oldfield's National Provider Identifier (NPI) is 1831465830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Oldfield's specialty?
- Benjamin Oldfield is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Oldfield located?
- Benjamin Oldfield's practice location on file with NPPES is 3020 14th St Nw, Washington, DC 20009-6865.
- What is Benjamin Oldfield's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Oldfield is (202) 469-4699.
- Does Benjamin Oldfield accept Medicare?
- Benjamin Oldfield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Oldfield's NPI active?
- Yes — Benjamin Oldfield's NPI (1831465830) is active in the NPPES registry as of the last update on 2025-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.