Dr. Margaret Leftwich Miller, MD
- Medicare services, 2024
- 41
- Medicare patients, 2024
- 23
- Part D claims, 2024
- 386
- Industry payments
- $354
- Medical group
- 1
- Practice address
- 2500 Alhambra Ave, Martinez, CA 94553
- Practice phone
- Call (925) 370-5955
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martinez Health Center
Martinez, California
Find Dr. Miller's professional email, personal email and mobile number
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Dr. Margaret Leftwich Miller is a forensic psychiatry physician in Martinez, California
Dr. Miller practices at Martinez Health Center in Martinez, California.
Dr. Miller's NPI, 1093768160, was assigned on May 18, 2006. Dr. Miller graduated from Universidad Autonoma de Guadalajara in 1988. Dr. Miller holds California license A49932.
- NPI
- 1093768160NPI Registry (opens in a new tab)
- NPI enumeration date
- May 18, 2006
- NPI status
- Active
- Practice phone
- (925) 370-5955
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Margaret Leftwich Miller practices at Martinez Health Center in Martinez, California
Dr. Miller's primary practice is Martinez Health Center, at 2500 Alhambra Ave, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5955.
- Martinez Health Center2500 Alhambra Ave, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5955
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Margaret Leftwich Miller is affiliated with 1 site of care and 1 medical group
Dr. Miller's primary practice is Martinez Health Center in Martinez, California. The medical group on file is West County Adult Mental Health Services.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Margaret Leftwich Miller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Miller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martinez Health Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret Leftwich Miller is one of 62 forensic psychiatry physicians in California
Forensic psychiatry is Dr. Miller's primary specialty in the NPI Registry, under taxonomy code 2084F0202X. Dr. Miller is licensed in California.
Specialties and state licenses
- Forensic psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety, bipolar disorder, depression and schizophrenia among the conditions Dr. Miller treats.
Forensic psychiatry physicians near Dr. Miller
Counts of forensic psychiatry 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
Dr. Margaret Leftwich Miller billed Medicare for 41 services in 2024
CMS data shows 41 Medicare services from Dr. Miller across 2 procedure codes in 2024, all of them office visits, for 23 Medicare patients. Medicare paid $4,968 for them. Every service was in an office.
Dr. Miller's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1162024: 4165%
Dr. Miller compared with the California median for forensic psychiatry physicians, 2024
- Dr. Miller
- California median
- Medicare services
- 41vs 9758% below
- Medicare patients
- 23vs 3228% below
- Part D claims
- 235vs 723.3 times
Medians across 56 forensic psychiatry physicians in California with Dmand AI profiles that report each measure.
Dr. Miller'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Miller and other forensic psychiatry physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margaret Leftwich Miller treated 23 Medicare patients in 2024, average age 56
CMS counts 23 Medicare patients who saw Dr. Miller in 2024. 61% of them have mood disorders, and 57% have anxiety. 100% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Miller's median patient age at 73, with 100% women.
Chronic conditions among Dr. Miller's Medicare patients, 2024
- Mood disorders61%
- Anxiety57%
- Depression48%
- High blood pressure48%
- High cholesterol48%
- Schizophrenia and other psychoses48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Miller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margaret Leftwich Miller wrote 386 Medicare Part D claims in 2024
In 2024, Dr. Miller wrote 386 Medicare Part D claims for 48 patients. 93% of them were for generic drugs. CMS names the drug for 235 of them, across 13 drugs with 11 or more claims each, at $44,728 in total drug cost. In 2023, CMS named 641 claims across 25 drugs.
Dr. Miller's Part D claims by kind of drug, 2024
- Generic358 claims93%
- Brand-name28 claims7%
Dr. Miller's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Miller's Part D claims, 2024
- Antipsychotics, patients 65 and over8%31 of 386 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6412024: 23563%
Drugs named by CMS: 13 in 2024, 25 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Margaret Leftwich Miller received $354 in industry payments from 2016 to 2025
CMS Open Payments shows 3 general payments to Dr. Miller from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $125.
General payments to Dr. Miller by program year, 2016 to 2025
Companies that paid Dr. Miller the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Margaret Leftwich Miller graduated from Universidad Autonoma de Guadalajara
Dr. Miller graduated from Universidad Autonoma de Guadalajara in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Margaret Leftwich Miller'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Dr. Margaret Leftwich Miller
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What is Dr. Margaret Leftwich Miller's NPI number?
Dr. Margaret Leftwich Miller's NPI number is 1093768160. It was assigned on May 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret Leftwich Miller?
Dr. Margaret Leftwich Miller is a forensic psychiatry physician in Martinez, California. The primary specialty in the NPI Registry is Forensic Psychiatry Physician (taxonomy code 2084F0202X).
Where does Dr. Margaret Leftwich Miller practice?
Dr. Miller practices at 2500 Alhambra Ave, Martinez, CA 94553. Dr. Miller's primary practice is Martinez Health Center in Martinez, California.
What is Dr. Margaret Leftwich Miller's office phone number?
The practice phone on file for Dr. Miller is (925) 370-5955.
What is Dr. Margaret Leftwich Miller's medical license number?
Dr. Miller holds California license A49932.
What medical group is Dr. Margaret Leftwich Miller part of?
Dr. Miller is linked to West County Adult Mental Health Services.
Does Dr. Margaret Leftwich Miller accept Medicare?
Yes. CMS data shows Dr. Miller billed Medicare for 41 services in 2024.
How many Medicare patients does Dr. Margaret Leftwich Miller see?
CMS counts 23 Medicare patients who saw Dr. Miller in 2024, with an average age of 56.
What services does Dr. Margaret Leftwich Miller bill to Medicare?
In 2024, Dr. Miller's most billed Medicare services were office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Margaret Leftwich Miller go to medical school?
Dr. Miller graduated from Universidad Autonoma de Guadalajara in 1988.
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What drugs does Dr. Margaret Leftwich Miller prescribe most?
In 2024 Medicare Part D data, Dr. Miller's most prescribed drugs by claims were Quetiapine Fumarate, Trazodone HCl and Clozapine.
Has Dr. Margaret Leftwich Miller received payments from drug or device companies?
CMS Open Payments shows $354 in general payments to Dr. Miller from 3 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Margaret Leftwich Miller been practicing?
Dr. Miller graduated from medical school in 1988, 38 years ago.
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