Ann Lockhart
NPI 1639219876 · Family Medicine Physician · Martinez, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Lockhart is a Family Medicine Physician provider in Martinez, CA (NPI 1639219876).
Provider details
- NPI number
- 1639219876
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- A80812 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
17 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $110 |
Typical Medicare-allowed amounts for these services range $110–$110 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1450 Treat Blvd # 320Walnut Creek, CA 94597-2168Phone: (925) 296-9880
Registry dates
- Enumerated
- 2007-02-07
- Last updated
- 2020-03-23
- Certified
- 2020-03-23
Frequently asked questions
- What is Ann Lockhart's NPI number?
- Ann Lockhart's National Provider Identifier (NPI) is 1639219876, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Lockhart's specialty?
- Ann Lockhart is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Lockhart located?
- Ann Lockhart's practice location on file with NPPES is 2500 Alhambra Ave, Martinez, CA 94553-3156.
- What is Ann Lockhart's phone number?
- The practice phone number listed in the NPPES registry for Ann Lockhart is (925) 370-5110.
- Does Ann Lockhart accept Medicare?
- Ann Lockhart is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Lockhart's NPI active?
- Yes — Ann Lockhart's NPI (1639219876) is active in the NPPES registry as of the last update on 2020-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.