Dr. Jonathan J. Prostak, MD
- Medicare services, 2024
- 345
- Medicare patients, 2024
- 157
- Part D claims, 2024
- 2,413
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Dr. Prostak'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. Jonathan J. Prostak is an internist in Ann Arbor, Michigan
Dr. Prostak practices at University Hospital in Ann Arbor, Michigan.
Dr. Prostak's NPI, 1235229105, was assigned on October 13, 2006. Dr. Prostak graduated from Albert Einstein College of Medicine of Yeshiva University in 2005. Dr. Prostak holds Michigan license 4301507548.
- NPI
- 1235229105NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416984513
- NPI enumeration date
- October 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan J. Prostak practices at University Hospital in Ann Arbor, Michigan
Dr. Prostak's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Dr. Jonathan J. Prostak is affiliated with 2 sites of care and 1 medical group
Dr. Prostak's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Prostak is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dr. Prostak's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan J. Prostak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Prostak practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan J. Prostak is one of 4,804 internists in Michigan
Internal medicine is Dr. Prostak's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Prostak's licenses on file in 2 states: Michigan and New York.
Specialties and state licenses
- Internal medicine, MichiganPrimary
- New York license
Internists near Dr. Prostak
Counts of internists 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. Jonathan J. Prostak billed Medicare for 345 services in 2024
CMS data shows 345 Medicare services from Dr. Prostak across 8 procedure codes in 2024, for 157 Medicare patients. Medicare paid $25,509 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Prostak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4112024: 30127%
- Other services
- 2023: 02024: 44
Dr. Prostak compared with the Michigan median for internists, 2024
- Dr. Prostak
- Michigan median
- Medicare services
- 345vs 42318% below
- Medicare patients
- 157vs 159Close to median
- Part D claims
- 1,784vs 3145.7 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Prostak'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. Prostak?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Prostak and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan J. Prostak treated 157 Medicare patients in 2024, average age 72
CMS counts 157 Medicare patients who saw Dr. Prostak in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.67, 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. Prostak's median patient age at 63, with 60% women.
Dr. Prostak's Medicare patients by age, 2024
Dr. Prostak's Medicare patients by sex, 2024
- Women9259%
- Men6541%
Chronic conditions among Dr. Prostak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Chronic kidney disease54%
- Diabetes50%
- Heart failure43%
- Mood disorders43%
- Ischemic heart disease42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Prostak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan J. Prostak wrote 2,413 Medicare Part D claims in 2024
In 2024, Dr. Prostak wrote 2,413 Medicare Part D claims for 331 patients. 79% of them were for generic drugs. CMS names the drug for 1,784 of them, across 62 drugs with 11 or more claims each, at $368,897 in total drug cost. In 2023, CMS named 1,517 claims across 54 drugs.
Dr. Prostak's Part D claims by kind of drug, 2024
- Generic1,908 claims79%
- Brand-name464 claims19%
- Other41 claims2%
Dr. Prostak'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. Prostak's Part D claims, 2024
- Opioids2%55 of 2,413 claims
- Antibiotics2%48 of 2,413 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: 1,5172024: 1,78418%
Drugs named by CMS: 62 in 2024, 54 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
How Dr. Jonathan J. Prostak takes part in Medicare
Dr. Prostak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jonathan J. Prostak has 2 publications on record
Dmand AI links 2 papers to Dr. Prostak, published from 2023 to 2025.
Recent publications by Dr. Prostak
See who Dr. Prostak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Prostak works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jonathan J. Prostak graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Prostak graduated from Albert Einstein College of Medicine of Yeshiva University in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan J. Prostak'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Jonathan J. Prostak
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. Jonathan J. Prostak's NPI number?
Dr. Jonathan J. Prostak's NPI number is 1235229105. It was assigned on October 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan J. Prostak?
Dr. Jonathan J. Prostak is an internist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jonathan J. Prostak practice?
Dr. Prostak practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Prostak's primary practice is University Hospital in Ann Arbor, Michigan.
What is Dr. Jonathan J. Prostak's office phone number?
The practice phone on file for Dr. Prostak is (734) 936-4000.
What is Dr. Jonathan J. Prostak's medical license number?
Dr. Prostak holds Michigan license 4301507548, one of the licenses on file in 2 states.
Which states has Dr. Jonathan J. Prostak been licensed in?
Dmand AI has state licenses on file for Dr. Prostak in Michigan and New York.
Which hospitals is Dr. Jonathan J. Prostak affiliated with?
Dr. Prostak is affiliated with University Hospital.
What medical group is Dr. Jonathan J. Prostak part of?
Dr. Prostak is linked to University of Michigan Health.
Does Dr. Jonathan J. Prostak accept Medicare?
Yes. CMS data shows Dr. Prostak billed Medicare for 345 services in 2024, and Dr. Prostak accepts Medicare assignment.
How many Medicare patients does Dr. Jonathan J. Prostak see?
CMS counts 157 Medicare patients who saw Dr. Prostak in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Jonathan J. Prostak bill to Medicare?
In 2024, Dr. Prostak's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and office visit, established patient (99214).
Where did Dr. Jonathan J. Prostak go to medical school?
Dr. Prostak graduated from Albert Einstein College of Medicine of Yeshiva University in 2005.
What drugs does Dr. Jonathan J. Prostak prescribe most?
In 2024 Medicare Part D data, Dr. Prostak's most prescribed drugs by claims were Atorvastatin Calcium, Jardiance and Losartan Potassium.
How long has Dr. Jonathan J. Prostak been practicing?
Dr. Prostak graduated from medical school in 2005, 21 years ago.
Does Dr. Jonathan J. Prostak do research?
Dmand AI links 2 publications to Dr. Prostak, published from 2023 to 2025.
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