Dr. John Robert Rostkowski, MD
- Medicare services, 2023
- 126
- Medicare patients, 2024
- 17
- Part D claims, 2024
- 1,001
- Hospital affiliations
- 1
- Industry payments
- $5,748
- 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. Rostkowski's professional email, personal email and mobile number
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Dr. John Robert Rostkowski is a psychiatrist in Martinez, California
Dr. Rostkowski practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Rostkowski's NPI, 1861424665, was assigned on July 6, 2006. Dr. Rostkowski graduated from New York University School of Medicine in 1969. Dr. Rostkowski holds California license G24111.
- NPI
- 1861424665NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557536919
- NPI enumeration date
- July 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Robert Rostkowski practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Rostkowski'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. John Robert Rostkowski is affiliated with 1 site of care and 1 medical group
Dr. Rostkowski's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is West County Adult Mental Health Services. Dr. Rostkowski's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Robert Rostkowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rostkowski 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. John Robert Rostkowski is one of 6,803 psychiatrists in California
Psychiatry is Dr. Rostkowski's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Rostkowski is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Rostkowski
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 Robert Rostkowski billed Medicare for 126 services in 2023
CMS data shows 126 Medicare services from Dr. Rostkowski across 3 procedure codes in 2023, for 17 Medicare patients. Medicare paid $10,442 for them.
Dr. Rostkowski's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1172023: 9816%
- Tests and treatments
- 2022: 352023: 2820%
Where Dr. Rostkowski's Medicare services took place, 2023
- In an office4233%
- In a facility8467%
Dr. Rostkowski compared with the California median for psychiatrists, 2023
- Dr. Rostkowski
- California median
- Medicare services
- 126vs 1196% above
- Medicare patients
- 17vs 4159% below
- Part D claims
- 850vs 1445.9 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Rostkowski's most billed Medicare procedure codes, 2023
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. Rostkowski and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Robert Rostkowski treated 17 Medicare patients in 2024, average age 52
CMS counts 17 Medicare patients who saw Dr. Rostkowski in 2024. 75% of them have mood disorders, and 71% have anxiety. 100% are also on Medicaid. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Rostkowski's median patient age at 57, with 25% women.
Chronic conditions among Dr. Rostkowski's Medicare patients, 2024
- Mood disorders75%
- Anxiety71%
- Depression71%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rostkowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women25%
- Men75%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Robert Rostkowski wrote 1,001 Medicare Part D claims in 2024
In 2024, Dr. Rostkowski wrote 1,001 Medicare Part D claims for 92 patients. 96% of them were for generic drugs. CMS names the drug for 850 of them, across 25 drugs with 11 or more claims each, at $30,237 in total drug cost. In 2023, CMS named 887 claims across 28 drugs.
Dr. Rostkowski's Part D claims by kind of drug, 2024
- Generic963 claims96%
- Brand-name38 claims4%
Dr. Rostkowski'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. Rostkowski's Part D claims, 2024
- Antipsychotics, patients 65 and over12%117 of 1,001 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: 8872024: 8504%
Drugs named by CMS: 25 in 2024, 28 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 Robert Rostkowski offers telehealth to Medicare patients
Dr. Rostkowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Rostkowski as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Robert Rostkowski received $5,748 in industry payments from 2016 to 2025
CMS Open Payments shows 62 general payments to Dr. Rostkowski from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $1,339.
General payments to Dr. Rostkowski by program year, 2016 to 2025
General payments to Dr. Rostkowski by kind, 2016 to 2025
- Food and beverage$5,53196%
- Education$2164%
Companies that paid Dr. Rostkowski 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. John Robert Rostkowski graduated from New York University School of Medicine
Dr. Rostkowski graduated from New York University School of Medicine in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Robert Rostkowski'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. John Robert Rostkowski
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 Robert Rostkowski's NPI number?
Dr. John Robert Rostkowski's NPI number is 1861424665. It was assigned on July 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Robert Rostkowski?
Dr. John Robert Rostkowski is a psychiatrist in Martinez, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. John Robert Rostkowski practice?
Dr. Rostkowski practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Rostkowski's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California.
What is Dr. John Robert Rostkowski's office phone number?
The practice phone on file for Dr. Rostkowski is (925) 370-5000.
What is Dr. John Robert Rostkowski's medical license number?
Dr. Rostkowski holds California license G24111.
Which hospitals is Dr. John Robert Rostkowski affiliated with?
Dr. Rostkowski practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. John Robert Rostkowski part of?
Dr. Rostkowski is linked to West County Adult Mental Health Services.
Does Dr. John Robert Rostkowski accept Medicare?
Yes. CMS data shows Dr. Rostkowski billed Medicare for 126 services in 2023, and Dr. Rostkowski accepts Medicare assignment.
Does Dr. John Robert Rostkowski offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Rostkowski as offering telehealth services.
How many Medicare patients does Dr. John Robert Rostkowski see?
CMS counts 17 Medicare patients who saw Dr. Rostkowski in 2024, with an average age of 52.
Show 5 more questionsShow fewer questions
What services does Dr. John Robert Rostkowski bill to Medicare?
In 2023, Dr. Rostkowski's most billed Medicare services were office visit, established patient (99214), psychiatric service (90792) and office visit, established patient (99213).
Where did Dr. John Robert Rostkowski go to medical school?
Dr. Rostkowski graduated from New York University School of Medicine in 1969.
What drugs does Dr. John Robert Rostkowski prescribe most?
In 2024 Medicare Part D data, Dr. Rostkowski's most prescribed drugs by claims were Clonazepam, Quetiapine Fumarate and Trazodone HCl.
Has Dr. John Robert Rostkowski received payments from drug or device companies?
CMS Open Payments shows $5,748 in general payments to Dr. Rostkowski from 13 companies from 2016 to 2025. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. John Robert Rostkowski been practicing?
Dr. Rostkowski graduated from medical school in 1969, 57 years ago.
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