Nancy Councelbaum, MD
NPI 1275635013 · Geriatric Medicine (Internal Medicine) Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Councelbaum, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Irvine, CA (NPI 1275635013).
Provider details
- NPI number
- 1275635013
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G57005 (CA)
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
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
1,336 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 | 561 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 137 | $99 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 135 | $140 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 88 | $62 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 69 | $15 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 452 | 122 |
| Atorvastatin Calcium | 332 | 107 |
| Losartan Potassium | 320 | 98 |
| Rosuvastatin Calcium | 302 | 91 |
| Amlodipine Besylate | 266 | 76 |
| Escitalopram Oxalate | 161 | 47 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Nancy Councelbaum's NPI number?
- Nancy Councelbaum's National Provider Identifier (NPI) is 1275635013, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Councelbaum's specialty?
- Nancy Councelbaum is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Councelbaum located?
- Nancy Councelbaum's practice location on file with NPPES is 16300 Sand Canyon Ave, Irvine, CA 92618-3711.
- What is Nancy Councelbaum's phone number?
- The practice phone number listed in the NPPES registry for Nancy Councelbaum is (949) 753-7475.
- Does Nancy Councelbaum accept Medicare?
- Nancy Councelbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Councelbaum's NPI active?
- Yes — Nancy Councelbaum's NPI (1275635013) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.