Ann Kao, M.D.
NPI 1336130145 · Cardiovascular Disease Physician · Larkspur, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Kao, M.D. is a Cardiovascular Disease Physician provider in Larkspur, CA (NPI 1336130145).
Provider details
- NPI number
- 1336130145
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G65338 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,348 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 373 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 264 | $146 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 196 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 157 | $204 |
| Outpatient Heart Rehabilitation With Electrocardiogram (ecg) Monitoring, Quality Health Care Professional Services93798 | 76 | $30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 204 | 68 |
| Metoprolol Succinate | 184 | 53 |
| Apixabanbrand: Eliquis | 124 | 34 |
| Amlodipine Besylate | 121 | 39 |
| Carvedilol | 89 | 26 |
| Ezetimibe | 79 | 23 |
| Olmesartan Medoxomil | 71 | 23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$188 across 3 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
Registry dates
- Enumerated
- 2005-11-01
- Last updated
- 2021-07-20
- Certified
- 2021-07-20
Frequently asked questions
- What is Ann Kao's NPI number?
- Ann Kao's National Provider Identifier (NPI) is 1336130145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Kao's specialty?
- Ann Kao is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Kao located?
- Ann Kao's practice location on file with NPPES is 2 Bon Air Rd Ste 100, Larkspur, CA 94939-1144.
- What is Ann Kao's phone number?
- The practice phone number listed in the NPPES registry for Ann Kao is (415) 927-0666.
- Does Ann Kao accept Medicare?
- Ann Kao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Kao's NPI active?
- Yes — Ann Kao's NPI (1336130145) is active in the NPPES registry as of the last update on 2021-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.