Dr. John Grabowski, MD
- Medicare services, 2024
- 380
- Medicare patients, 2024
- 33
- Part D claims, 2024
- 849
- Hospital affiliations
- 1
- Industry payments
- $34
- Practice address
- 3601 W Thirteen Mile Rd, Royal Oak, MI 48073
- Practice phone
- Call (248) 898-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Grabowski'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 Grabowski is a psychiatrist in Royal Oak, Michigan
Dr. Grabowski practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health.
Dr. Grabowski's NPI, 1477517191, was assigned on April 12, 2006. Dr. Grabowski graduated from Wayne State University School of Medicine in 1983. Dr. Grabowski holds Michigan license 4301048493.
- NPI
- 1477517191NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921011834
- NPI enumeration date
- April 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (248) 898-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Grabowski practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan
Dr. Grabowski's primary practice is Corewell Health William Beaumont University Hospital, at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073 in Oakland County. The practice phone is (248) 898-5400.
- Corewell Health William Beaumont University Hospital3601 W Thirteen Mile Rd, Royal Oak, MI 48073 · Oakland CountyPhone(248) 898-5400
Source: Dmand AI Affiliation Data
Dr. John Grabowski is affiliated with 2 sites of care and 2 medical groups
Dr. Grabowski's primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. The medical group on file is Henry Ford Jackson Hospital (formerly Henry Ford Allegiance Health). Dmand AI also links Dr. Grabowski to 1 more physician office and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Grabowski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grabowski practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health William Beaumont University Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Grabowski is one of 1,337 psychiatrists in Michigan
Psychiatry is Dr. Grabowski's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Grabowski is licensed in Michigan.
Specialties and state licenses
- Psychiatry, MichiganPrimary
Psychiatrists near Dr. Grabowski
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 Grabowski billed Medicare for 380 services in 2024
CMS data shows 380 Medicare services from Dr. Grabowski across 4 procedure codes in 2024, for 33 Medicare patients. Medicare paid $27,029 for them. Every service was in an office.
Dr. Grabowski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2332024: 2244%
- Tests and treatments
- 2023: 2002024: 15622%
Dr. Grabowski compared with the Michigan median for psychiatrists, 2024
- Dr. Grabowski
- Michigan median
- Medicare services
- 380vs 1472.6 times
- Medicare patients
- 33vs 4831% below
- Part D claims
- 676vs 2153.1 times
Medians across 1,367 psychiatrists in Michigan with Dmand AI profiles that report each measure.
Dr. Grabowski'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Grabowski treated 33 Medicare patients in 2024, average age 65
CMS counts 33 Medicare patients who saw Dr. Grabowski in 2024. The largest group is under 65, with 13 patients. 75% of them have depression, and 75% have mood disorders. Their average risk score is 1.15, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grabowski's median patient age at 66, with 47% women.
Dr. Grabowski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grabowski's Medicare patients by sex, 2024
- Women1752%
- Men1648%
Chronic conditions among Dr. Grabowski's Medicare patients, 2024
- Depression75%
- Mood disorders75%
- Schizophrenia and other psychoses75%
- High cholesterol73%
- High blood pressure64%
- Anxiety58%
- Arthritis48%
- Bipolar disorder39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grabowski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Grabowski wrote 849 Medicare Part D claims in 2024
In 2024, Dr. Grabowski wrote 849 Medicare Part D claims for 56 patients. 97% of them were for generic drugs. CMS names the drug for 676 of them, across 30 drugs with 11 or more claims each, at $13,646 in total drug cost. In 2023, CMS named 551 claims across 27 drugs.
Dr. Grabowski's Part D claims by kind of drug, 2024
- Generic821 claims97%
- Brand-name28 claims3%
Dr. Grabowski'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. Grabowski's Part D claims, 2024
- Antipsychotics, patients 65 and over8%66 of 849 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: 5512024: 67623%
Drugs named by CMS: 30 in 2024, 27 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 Grabowski offers telehealth to Medicare patients
Dr. Grabowski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grabowski as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Grabowski received $34 in industry payments from 2017 to 2020
CMS Open Payments shows 2 general payments to Dr. Grabowski from 2 drug and device companies from 2017 to 2020. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $20.
General payments to Dr. Grabowski by program year, 2017 to 2020
Companies that paid Dr. Grabowski the most, 2017 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Grabowski graduated from Wayne State University School of Medicine
Dr. Grabowski graduated from Wayne State University School of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Grabowski'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 Grabowski
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 Grabowski's NPI number?
Dr. John Grabowski's NPI number is 1477517191. It was assigned on April 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Grabowski?
Dr. John Grabowski is a psychiatrist in Royal Oak, Michigan. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. John Grabowski practice?
Dr. Grabowski practices at 3601 W Thirteen Mile Rd, Royal Oak, MI 48073. Dr. Grabowski's primary practice is Corewell Health William Beaumont University Hospital in Royal Oak, Michigan, part of Corewell Health. Dmand AI also links Dr. Grabowski to 1 physician office and 1 medical group.
What is Dr. John Grabowski's office phone number?
The practice phone on file for Dr. Grabowski is (248) 898-5400.
What is Dr. John Grabowski's medical license number?
Dr. Grabowski holds Michigan license 4301048493.
Which hospitals is Dr. John Grabowski affiliated with?
Dr. Grabowski practices at Corewell Health William Beaumont University Hospital in Royal Oak, Michigan.
What medical group is Dr. John Grabowski part of?
Dr. Grabowski is linked to Henry Ford Jackson Hospital (formerly Henry Ford Allegiance Health). Dmand AI links Dr. Grabowski to 1 more medical group.
Does Dr. John Grabowski accept Medicare?
Yes. CMS data shows Dr. Grabowski billed Medicare for 380 services in 2024, and Dr. Grabowski accepts Medicare assignment.
Does Dr. John Grabowski offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grabowski as offering telehealth services.
How many Medicare patients does Dr. John Grabowski see?
CMS counts 33 Medicare patients who saw Dr. Grabowski in 2024, with an average age of 65.
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What services does Dr. John Grabowski bill to Medicare?
In 2024, Dr. Grabowski's most billed Medicare services were office visit, established patient (99213), psychiatric service (90838) and psychiatric service (90836).
Where did Dr. John Grabowski go to medical school?
Dr. Grabowski graduated from Wayne State University School of Medicine in 1983.
What drugs does Dr. John Grabowski prescribe most?
In 2024 Medicare Part D data, Dr. Grabowski's most prescribed drugs by claims were Clonazepam, Sertraline HCl and Aripiprazole.
Has Dr. John Grabowski received payments from drug or device companies?
CMS Open Payments shows $34 in general payments to Dr. Grabowski from 2 companies from 2017 to 2020. The largest total came from ViiV Healthcare Company.
How long has Dr. John Grabowski been practicing?
Dr. Grabowski graduated from medical school in 1983, 43 years ago.
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