Dr. John Carter Barker, MD
- Medicare services, 2018
- 128
- Part D claims, 2024
- 208
- Publications
- 2
- MIPS score, 2024
- 88
- Industry payments
- $475
- Practice address
- 505 Parnassus Ave, San Francisco, CA 94131
- Practice phone
- Call (415) 353-2742
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCSF Health Parnassus Hospital
San Francisco, California
Find Dr. Barker'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.
Dr. John Carter Barker is a psychiatrist in San Francisco, California
Dr. Barker practices at UCSF Health Parnassus Hospital in San Francisco, California.
Dr. Barker's NPI, 1487794020, was assigned on February 6, 2007. Dr. Barker graduated from University of Maryland School of Medicine - Baltimore in 1987. Dr. Barker holds California license G84024.
- NPI
- 1487794020NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931257706
- NPI enumeration date
- February 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-2742
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Carter Barker practices at UCSF Health Parnassus Hospital in San Francisco, California
Dr. Barker's primary practice is UCSF Health Parnassus Hospital, at 505 Parnassus Ave, San Francisco, CA 94131 in San Francisco County. The practice phone is (415) 353-2742.
- UCSF Health Parnassus Hospital505 Parnassus Ave, San Francisco, CA 94131 · San Francisco CountyPhone(415) 353-2742
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Carter Barker is affiliated with 1 site of care and 1 medical group
Dr. Barker's primary practice is UCSF Health Parnassus Hospital in San Francisco, California. The medical group on file is San Francisco Public Health Laboratory.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Carter Barker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barker practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Health Parnassus Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Carter Barker is one of 6,803 psychiatrists in California
Psychiatry is Dr. Barker's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Barker is board certified in child & adolescent psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Barker's licenses on file in 2 states: California and Maryland.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
- Maryland license
Clinical focus
Dmand AI lists bipolar disorder among the conditions Dr. Barker treats.
Psychiatrists near Dr. Barker
Counts of psychiatrists 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. John Carter Barker billed Medicare for 128 services in 2018
CMS data shows 128 Medicare services from Dr. Barker across 2 procedure codes in 2018, all of them office visits. Medicare paid $6,255 for them. Every service was in an office.
Dr. Barker's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1942018: 12834%
Dr. Barker compared with the California median for psychiatrists, 2018
- Dr. Barker
- California median
- Medicare services
- 128vs 1198% above
- Part D claims
- 115vs 14420% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Barker's most billed Medicare procedure codes, 2018
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. Barker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barker and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Carter Barker's patients have a median age of 35
Across all payers, Dmand AI patient panel data puts Dr. Barker's median patient age at 35, with 100% women.
Dr. Barker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. John Carter Barker wrote 208 Medicare Part D claims in 2024
In 2024, Dr. Barker wrote 208 Medicare Part D claims. 84% of them were for generic drugs. CMS names the drug for 115 of them, across 8 drugs with 11 or more claims each, at $10,866 in total drug cost. In 2023, CMS named 50 claims across 4 drugs.
Dr. Barker's Part D claims by kind of drug, 2024
- Generic175 claims84%
- Brand-name33 claims16%
Dr. Barker'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. Barker's Part D claims, 2024
- Antipsychotics, patients 65 and over14%29 of 208 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: 502024: 115130%
Drugs named by CMS: 8 in 2024, 4 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
Dr. John Carter Barker scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Barker for performance year 2024, reported as part of a group. Dr. Barker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Barker's MIPS scores, performance year 2024
- 88of 100Final score
- 61.1of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 84of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Carter Barker has 2 publications on record
Dmand AI links 2 papers to Dr. Barker.
Recent publications by Dr. Barker
See who Dr. Barker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Barker 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. John Carter Barker received $475 in industry payments in 2022
CMS Open Payments shows 1 general payment to Dr. Barker from 1 drug or device company in 2022. Consulting fees make up the largest share, 100% of the total. Sage Therapeutics, Inc. paid the most, $475.
Companies that paid Dr. Barker the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Carter Barker has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Barker, most recently Irving Phillips Memorial Award in 2002.
Awards and honors for Dr. Barker
- 2002
- Irving Phillips Memorial Award
- 1999
- Ginsburg Fellowship
- 1987
- Finesinger Award
Source: Dmand AI Professional Profile Data
Dr. John Carter Barker graduated from University of Maryland School of Medicine - Baltimore
Dr. Barker graduated from University of Maryland School of Medicine - Baltimore in 1987. Dr. Barker is a member of AACAP.
- Medical school
- Board certified in child & adolescent psychiatry
Source: Dmand AI Professional Profile Data
Dr. John Carter Barker accepts plans from 1 insurance carrier
Dr. Barker is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. John Carter Barker'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 Data |
| 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) |
| 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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 Dr. John Carter Barker
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. John Carter Barker's NPI number?
Dr. John Carter Barker's NPI number is 1487794020. It was assigned on February 6, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. John Carter Barker?
Dr. John Carter Barker is a psychiatrist in San Francisco, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. John Carter Barker practice?
Dr. Barker practices at 505 Parnassus Ave, San Francisco, CA 94131. Dr. Barker's primary practice is UCSF Health Parnassus Hospital in San Francisco, California.
What is Dr. John Carter Barker's office phone number?
The practice phone on file for Dr. Barker is (415) 353-2742.
What is Dr. John Carter Barker's medical license number?
Dr. Barker holds California license G84024, one of the licenses on file in 2 states.
Which states has Dr. John Carter Barker been licensed in?
Dmand AI has state licenses on file for Dr. Barker in California (1997 to 2027) and Maryland (1990 to 1994).
What medical group is Dr. John Carter Barker part of?
Dr. Barker is linked to San Francisco Public Health Laboratory.
Does Dr. John Carter Barker accept Medicare?
Yes. CMS data shows Dr. Barker billed Medicare for 128 services in 2018, and Dr. Barker accepts Medicare assignment.
What is Dr. John Carter Barker's MIPS score?
Dr. Barker's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Is Dr. John Carter Barker board certified?
Yes. Dr. Barker is board certified in child & adolescent psychiatry by the American Board of Psychiatry and Neurology.
Show 7 more questionsShow fewer questions
What services does Dr. John Carter Barker bill to Medicare?
In 2018, Dr. Barker's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99212).
Where did Dr. John Carter Barker go to medical school?
Dr. Barker graduated from University of Maryland School of Medicine - Baltimore in 1987.
What drugs does Dr. John Carter Barker prescribe most?
In 2024 Medicare Part D data, Dr. Barker's most prescribed drugs by claims were Quetiapine Fumarate, Clonazepam and Duloxetine HCl.
Has Dr. John Carter Barker received payments from drug or device companies?
CMS Open Payments shows $475 in general payments to Dr. Barker from 1 company from 2022 to 2022. The largest total came from Sage Therapeutics, Inc.
How long has Dr. John Carter Barker been practicing?
Dr. Barker graduated from medical school in 1987, 39 years ago.
Does Dr. John Carter Barker do research?
Dmand AI links 2 publications to Dr. Barker.
What insurance does Dr. John Carter Barker accept?
Dr. Barker is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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