Ann Brewster Lockhart
- Medicare services, 2024
- 17
- Medicare patients, 2024
- 24
- Part D claims, 2024
- 27
- MIPS score, 2024
- 90
- Hospital affiliations
- 1
- Practice address
- 1450 Treat Blvd, Walnut Creek, CA 94597
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John Muir Medical Center - Walnut C - Imaging - HOPD
Acute Care Hospital outpatient department · Walnut Creek, California
Find Ann Lockhart's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Ann Brewster Lockhart is a family medicine physician in Walnut Creek, California
Ann Lockhart practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California.
Ann Lockhart's NPI, 1639219876, was assigned on February 7, 2007. Ann Lockhart graduated from UC San Diego School of Medicine in 2001. Ann Lockhart holds California license A80812.
- NPI
- 1639219876NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456310234
- NPI enumeration date
- February 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ann Brewster Lockhart practices at John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California
Ann Lockhart's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD, at 1450 Treat Blvd, Walnut Creek, CA 94597.
- John Muir Medical Center - Walnut C - Imaging - HOPD1450 Treat Blvd, Walnut Creek, CA 94597
Source: Dmand AI Affiliation Data
Ann Brewster Lockhart is affiliated with 2 sites of care and 2 medical groups
Ann Lockhart's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. Ann Lockhart is also affiliated with Contra Costa Regional Medical Center. The medical group on file is John Muir Medical Group. Dmand AI also links Ann Lockhart to 1 more medical group, named with a free account. Ann Lockhart's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Ann Brewster Lockhart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ann Lockhart practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center - Walnut C - Imaging - HOPD | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Ann Brewster Lockhart is one of 15,680 family medicine physicians in California
Family medicine is Ann Lockhart's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Ann Lockhart is board certified in family medicine by the American Board of Family Medicine. Ann Lockhart is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic hypertension, lower back pain and menopause among the conditions Ann Lockhart treats.
Family medicine physicians near Ann Lockhart
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Ann Brewster Lockhart billed Medicare for 17 services in 2024
CMS data shows 17 Medicare services from Ann Lockhart across 1 procedure code in 2024, all of them office visits, for 24 Medicare patients. Medicare paid $1,052 for them. Every service was in an office.
Ann Lockhart's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 182024: 176%
Ann Lockhart compared with the California median for family medicine physicians, 2024
- Ann Lockhart
- California median
- Medicare services
- 17vs 24693% below
- Medicare patients
- 24vs 11880% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Ann Lockhart's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Ann Brewster Lockhart treated 24 Medicare patients in 2024, average age 75
CMS counts 24 Medicare patients who saw Ann Lockhart in 2024. 75% of them have high cholesterol, and 58% have high blood pressure. 46% are also on Medicaid. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ann Lockhart's median patient age at 38, with 80% women.
Chronic conditions among Ann Lockhart's Medicare patients, 2024
- High cholesterol75%
- High blood pressure58%
Share of Medicare patients with each condition. A patient can have several.
Ann Lockhart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women80%
- Men19%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ann Brewster Lockhart wrote 27 Medicare Part D claims in 2024
In 2024, Ann Lockhart wrote 27 Medicare Part D claims for 13 patients. 89% of them were for generic drugs.
Ann Lockhart's Part D claims by kind of drug, 2024
- Generic24 claims89%
- Brand-name and other3 claims11%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Ann Brewster Lockhart scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Ann Lockhart for performance year 2024, reported as part of a group. Ann Lockhart accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ann Lockhart as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Ann Lockhart's MIPS scores, performance year 2024
- 90of 100Final score
- 89.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Ann Brewster Lockhart graduated from UC San Diego School of Medicine
Ann Lockhart graduated from UC San Diego School of Medicine in 2001.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Ann Brewster Lockhart accepts plans from 12 insurance carriers
Ann Lockhart is in network with 12 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Ann Lockhart accepts, by number of carriers
- Medicare8
- PPO8
- HMO6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Ann Brewster Lockhart's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Ann Brewster Lockhart
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ann Brewster Lockhart's NPI number?
Ann Brewster Lockhart's NPI number is 1639219876. It was assigned on February 7, 2007, and it is active in the NPI Registry.
What does Ann Brewster Lockhart specialize in?
Ann Brewster Lockhart is a family medicine physician in Walnut Creek, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Ann Brewster Lockhart practice?
Ann Lockhart practices at 1450 Treat Blvd, Walnut Creek, CA 94597. Ann Lockhart's primary practice is John Muir Medical Center - Walnut C - Imaging - HOPD in Walnut Creek, California. Dmand AI also links Ann Lockhart to 1 medical group.
What is Ann Brewster Lockhart's medical license number?
Ann Lockhart holds California license A80812.
Which hospitals is Ann Brewster Lockhart affiliated with?
Ann Lockhart is affiliated with Contra Costa Regional Medical Center.
What medical group is Ann Brewster Lockhart part of?
Ann Lockhart is linked to John Muir Medical Group. Dmand AI links Ann Lockhart to 1 more medical group.
Does Ann Brewster Lockhart accept Medicare?
Yes. CMS data shows Ann Lockhart billed Medicare for 17 services in 2024, and Ann Lockhart accepts Medicare assignment.
Does Ann Brewster Lockhart offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Ann Lockhart as offering telehealth services.
What is Ann Brewster Lockhart's MIPS score?
Ann Lockhart's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Ann Brewster Lockhart see?
CMS counts 24 Medicare patients who saw Ann Lockhart in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
Is Ann Brewster Lockhart board certified?
Yes. Ann Lockhart is board certified in family medicine by the American Board of Family Medicine.
What services does Ann Brewster Lockhart bill to Medicare?
In 2024, Ann Lockhart's most billed Medicare services were office visit, established patient (99213).
Where did Ann Brewster Lockhart go to medical school?
Ann Lockhart graduated from UC San Diego School of Medicine in 2001.
How long has Ann Brewster Lockhart been practicing?
Ann Lockhart graduated from medical school in 2001, 25 years ago.
What insurance does Ann Brewster Lockhart accept?
Ann Lockhart is in network with 12 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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