Susan Ahern, D.O.
NPI 1508156597 · Endocrinology, Diabetes & Metabolism Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Ahern, D.O. is a Endocrinology, Diabetes & Metabolism Physician provider in Ventura, CA (NPI 1508156597).
Provider details
- NPI number
- 1508156597
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A12600 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,458 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 562 | $137 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 442 | $96 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 153 | $16 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 121 | $36 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 55 | $9 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 422 | 132 |
| Tirzepatidebrand: Mounjaro | 305 | 64 |
| Metformin Hclbrand: Metformin Hcl Er | 251 | 87 |
| Semaglutidebrand: Ozempic | 243 | 66 |
| Metformin Hcl | 163 | 55 |
| Levothyroxine Sodiumbrand: Synthroid | 157 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$131 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
Additional practice locations (1)
- 100 Moody Ct Ste 200Thousand Oaks, CA 91360-6082Phone: (805) 418-3500Fax: (805) 418-3505
Registry dates
- Enumerated
- 2011-04-12
- Last updated
- 2020-05-21
- Certified
- 2020-05-21
Frequently asked questions
- What is Susan Ahern's NPI number?
- Susan Ahern's National Provider Identifier (NPI) is 1508156597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Ahern's specialty?
- Susan Ahern is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Ahern located?
- Susan Ahern's practice location on file with NPPES is 6633 Telephone Rd Ste 212, Ventura, CA 93003-5569.
- What is Susan Ahern's phone number?
- The practice phone number listed in the NPPES registry for Susan Ahern is (805) 644-9121.
- Does Susan Ahern accept Medicare?
- Susan Ahern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Ahern's NPI active?
- Yes — Susan Ahern's NPI (1508156597) is active in the NPPES registry as of the last update on 2020-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.