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Dr. Michelle Jean Ahn, MD
NPI1295902930
- Medicare services, 2024
- 55
- Medicare patients, 2024
- 39
- Part D claims, 2024
- 169
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ahn's professional email, personal email and mobile number
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Dr. Michelle Jean Ahn is a psychiatrist in Martinez, California
Dr. Ahn practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Ahn's NPI, 1295902930, was assigned on May 12, 2008. Dr. Ahn graduated from University of Illinois College of Medicine - Chicago in 2008. Dr. Ahn holds California license A121280.
NPI and contact details
- NPI
- 1295902930NPI Registry (opens in a new tab)
- NPI enumeration date
- May 12, 2008
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Michelle Jean Ahn practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Ahn's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Dr. Michelle Jean Ahn is affiliated with 1 site of care and 1 medical group
Dr. Ahn's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is Telecare Corporation.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michelle Jean Ahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michelle Jean Ahn is one of 6,803 psychiatrists in California
Psychiatry is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Ahn is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Ahn's licenses on file in 3 states: California, Texas and Illinois.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
- Texas license
- Illinois license
Clinical focus
Dmand AI lists schizophrenia among the conditions Dr. Ahn treats.
Psychiatrists near Dr. Ahn
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
6,803psychiatrists in California81psychiatrists in Martinez56psychiatrists at Contra Costa Regional Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michelle Jean Ahn billed Medicare for 55 services in 2024
CMS data shows 55 Medicare services from Dr. Ahn across 1 procedure code in 2024, for 39 Medicare patients. Medicare paid $7,903 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202455
Medicare patients39
Paid by Medicare$7,903
Procedure codes1
Dr. Ahn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 382024: 5545%
Dr. Ahn compared with the California median for psychiatrists, 2024
- Dr. Ahn
- California median
- Medicare services
- 55vs 11954% below
- Medicare patients
- 39vs 41Close to median
- Part D claims
- 45vs 14469% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Ahn'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.
Need commercial claims for Dr. Ahn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ahn and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michelle Jean Ahn treated 39 Medicare patients in 2024, average age 50
CMS counts 39 Medicare patients who saw Dr. Ahn in 2024. 75% of them have schizophrenia and other psychoses, and 69% have anxiety. 100% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ahn's median patient age at 58, with 50% women.
Medicare patients, 202439
Average age50
Average risk score1.19
Also on Medicaid100%
Dr. Ahn's Medicare patients by sex, 2024
- Women1846%
- Men2154%
Chronic conditions among Dr. Ahn's Medicare patients, 2024
- Schizophrenia and other psychoses75%
- Anxiety69%
- Tobacco use67%
- Mood disorders64%
- Alcohol and drug use disorders56%
- Bipolar disorder51%
- High cholesterol49%
- Depression44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michelle Jean Ahn wrote 169 Medicare Part D claims in 2024
In 2024, Dr. Ahn wrote 169 Medicare Part D claims for 43 patients. 95% of them were for generic drugs. CMS names the drug for 45 of them, across 3 drugs with 11 or more claims each, at $719 in total drug cost. In 2023, CMS named 101 claims across 6 drugs.
Part D claims, 2024169
Drugs named by CMS3
Total drug cost$719
Part D patients43
Dr. Ahn's Part D claims by kind of drug, 2024
- Generic160 claims95%
- Brand-name and other9 claims5%
Dr. Ahn'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. Ahn's Part D claims, 2024
- Antipsychotics, patients 65 and over8%14 of 169 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: 1012024: 4555%
Drugs named by CMS: 3 in 2024, 6 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. Michelle Jean Ahn has 1 publication on record
Dmand AI links 1 paper to Dr. Ahn in 2022.
Papers1
Recent publications by Dr. Ahn
See who Dr. Ahn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ahn works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Michelle Jean Ahn received $43 in industry payments from 2017 to 2018
CMS Open Payments shows 2 general payments to Dr. Ahn from 2 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. DENTSPLY IH Inc. paid the most, $23.
General payments to Dr. Ahn by program year, 2017 to 2018
Companies that paid Dr. Ahn the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michelle Jean Ahn graduated from University of Illinois College of Medicine - Chicago
Dr. Ahn graduated from University of Illinois College of Medicine - Chicago in 2008.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Sources for Dr. Michelle Jean Ahn'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 DataDmand AI Org Hierarchy 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Michelle Jean Ahn
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michelle Jean Ahn's NPI number?
Dr. Michelle Jean Ahn's NPI number is 1295902930. It was assigned on May 12, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Michelle Jean Ahn?
Dr. Michelle Jean Ahn is a psychiatrist in Martinez, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Michelle Jean Ahn practice?
Dr. Ahn practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Ahn's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California.
What is Dr. Michelle Jean Ahn's office phone number?
The practice phone on file for Dr. Ahn is (925) 370-5000.
What is Dr. Michelle Jean Ahn's medical license number?
Dr. Ahn holds California license A121280, one of the licenses on file in 3 states.
Which states has Dr. Michelle Jean Ahn been licensed in?
Dmand AI has state licenses on file for Dr. Ahn in California (2012 to 2026), Texas (2020 to 2025) and Illinois (2009 to 2014).
Which hospitals is Dr. Michelle Jean Ahn affiliated with?
Dr. Ahn practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. Michelle Jean Ahn part of?
Dr. Ahn is linked to Telecare Corporation.
Does Dr. Michelle Jean Ahn accept Medicare?
Yes. CMS data shows Dr. Ahn billed Medicare for 55 services in 2024.
How many Medicare patients does Dr. Michelle Jean Ahn see?
CMS counts 39 Medicare patients who saw Dr. Ahn in 2024, with an average age of 50.
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Is Dr. Michelle Jean Ahn board certified?
Yes. Dr. Ahn is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Michelle Jean Ahn bill to Medicare?
In 2024, Dr. Ahn's most billed Medicare services were psychiatric service (90792).
Where did Dr. Michelle Jean Ahn go to medical school?
Dr. Ahn graduated from University of Illinois College of Medicine - Chicago in 2008.
What drugs does Dr. Michelle Jean Ahn prescribe most?
In 2024 Medicare Part D data, Dr. Ahn's most prescribed drugs by claims were Clozapine, Divalproex Sodium and Olanzapine.
Has Dr. Michelle Jean Ahn received payments from drug or device companies?
CMS Open Payments shows $43 in general payments to Dr. Ahn from 2 companies from 2017 to 2018. The largest total came from DENTSPLY IH Inc.
How long has Dr. Michelle Jean Ahn been practicing?
Dr. Ahn graduated from medical school in 2008, 18 years ago.
Does Dr. Michelle Jean Ahn do research?
Dmand AI links 1 publication to Dr. Ahn.
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