Gerald Oldham, MD
NPI 1235176207 · Internal Medicine Physician · Peoria, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerald Oldham, MD is a Internal Medicine Physician provider in Peoria, AZ (NPI 1235176207).
Provider details
- NPI number
- 1235176207
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 10076 (AZ)
Specialties & taxonomies
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
837 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 | 272 | $124 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 247 | $125 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 179 | $173 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 36 | $14 |
| Administration of Influenza Virus VaccineG0008 | 33 | $31 |
| Transitional Care Management Services for Problem of High Complexity99496 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 142 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 554 | 168 |
| Atorvastatin Calcium | 543 | 167 |
| Amlodipine Besylate | 488 | 151 |
| Losartan Potassium | 378 | 119 |
| Lisinopril | 346 | 108 |
| Simvastatin | 336 | 98 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-31
- Last updated
- 2008-01-24
Frequently asked questions
- What is Gerald Oldham's NPI number?
- Gerald Oldham's National Provider Identifier (NPI) is 1235176207, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Oldham's specialty?
- Gerald Oldham is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Oldham located?
- Gerald Oldham's practice location on file with NPPES is 13640 N Plaza Del Rio Blvd, Peoria, AZ 85381-4846.
- What is Gerald Oldham's phone number?
- The practice phone number listed in the NPPES registry for Gerald Oldham is (623) 876-3850.
- Does Gerald Oldham accept Medicare?
- Gerald Oldham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerald Oldham's NPI active?
- Yes — Gerald Oldham's NPI (1235176207) is active in the NPPES registry as of the last update on 2008-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.