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Dr. Joseph O'Hara Niezer, MD
NPI1538509476PAC ID3072812122
- Medicare services, 2024
- 125
- Medicare patients, 2024
- 37
- Part D claims, 2024
- 1,459
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 2750 E Belt Line NE Ave, Grand Rapids, MI 49525
- Practice phone
- Call (877) 362-8362
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Corewell Health Medical Group West
Grand Rapids, Michigan
Find Dr. Niezer'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. Joseph O'Hara Niezer is a psychiatrist in Grand Rapids, Michigan
Dr. Niezer practices at Corewell Health Medical Group West in Grand Rapids, Michigan.
Dr. Niezer's NPI, 1538509476, was assigned on June 25, 2013. Dr. Niezer graduated from Indiana University School of Medicine in 2013. Dr. Niezer holds Michigan license 4301510036.
NPI and contact details
- NPI
- 1538509476NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072812122
- NPI enumeration date
- June 25, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (877) 362-8362
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph O'Hara Niezer practices at Corewell Health Medical Group West in Grand Rapids, Michigan
Dr. Niezer's primary practice is Corewell Health Medical Group West, at 2750 E Belt Line NE Ave, Grand Rapids, MI 49525 in Kent County. The practice phone is (877) 362-8362.
- Corewell Health Medical Group West2750 E Belt Line NE Ave, Grand Rapids, MI 49525 · Kent CountyPhone(877) 362-8362
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joseph O'Hara Niezer is affiliated with 3 sites of care and 1 medical group
Dr. Niezer's primary practice is Corewell Health Medical Group West in Grand Rapids, Michigan. Dr. Niezer is also affiliated with Corewell Health Grand Rapids Hospitals - Butterworth. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Dr. Niezer to 1 more group practice or clinic, named with a free account.
Corewell Health Medical Group WestPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Joseph O'Hara Niezer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Niezer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Medical Group West | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joseph O'Hara Niezer is one of 1,337 psychiatrists in Michigan
Psychiatry is Dr. Niezer's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Niezer is licensed in Michigan.
Specialties and state licenses
- Psychiatry, MichiganPrimary
Psychiatrists near Dr. Niezer
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. Joseph O'Hara Niezer billed Medicare for 125 services in 2024
CMS data shows 125 Medicare services from Dr. Niezer across 4 procedure codes in 2024, for 37 Medicare patients. Medicare paid $9,700 for them. Every service was in an office.
Medicare services, 2024125
Medicare patients37
Paid by Medicare$9,700
Procedure codes4
Dr. Niezer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 02024: 71
- Office and hospital visits
- 2023: 2522024: 5479%
Dr. Niezer compared with the Michigan median for psychiatrists, 2024
- Dr. Niezer
- Michigan median
- Medicare services
- 125vs 14715% below
- Medicare patients
- 37vs 4823% below
- Part D claims
- 1,264vs 2155.9 times
Medians across 1,367 psychiatrists in Michigan with Dmand AI profiles that report each measure.
Dr. Niezer'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Niezer and other psychiatrists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph O'Hara Niezer treated 37 Medicare patients in 2024, average age 67
CMS counts 37 Medicare patients who saw Dr. Niezer in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have anxiety, and 75% have depression. 38% are also on Medicaid. Their average risk score is 1.73, 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. Niezer's median patient age at 48, with 59% women.
Medicare patients, 202437
Average age67
Average risk score1.73
Also on Medicaid38%
Dr. Niezer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Niezer's Medicare patients by sex, 2024
- Women2465%
- Men1335%
Chronic conditions among Dr. Niezer's Medicare patients, 2024
- Anxiety75%
- Depression75%
- Mood disorders75%
- Arthritis59%
- High blood pressure59%
- High cholesterol57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Niezer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph O'Hara Niezer wrote 1,459 Medicare Part D claims in 2024
In 2024, Dr. Niezer wrote 1,459 Medicare Part D claims for 301 patients. 95% of them were for generic drugs. CMS names the drug for 1,264 of them, across 29 drugs with 11 or more claims each, at $187,146 in total drug cost. In 2023, CMS named 3,835 claims across 52 drugs.
Part D claims, 20241,459
Drugs named by CMS29
Total drug cost$187,146
Part D patients301
Dr. Niezer's Part D claims by kind of drug, 2024
- Generic1,383 claims95%
- Brand-name76 claims5%
Dr. Niezer'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. Niezer's Part D claims, 2024
- Antipsychotics, patients 65 and over6%93 of 1,459 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: 3,8352024: 1,26467%
Drugs named by CMS: 29 in 2024, 52 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. Joseph O'Hara Niezer offers telehealth to Medicare patients
Dr. Niezer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Niezer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Joseph O'Hara Niezer has 2 publications on record
Dmand AI links 2 papers to Dr. Niezer, published from 2017 to 2018. The most frequent topics are Suicide and Suicide Prevention. Dr. Niezer's most frequent co-authors are Kyle David Roseberry, Krista M. Brucker, MD and Carter Evan Duggan, MD.
Papers2
Years published2017 to 2018
Topics Dr. Niezer writes about most
- Suicide
- Suicide Prevention
Dr. Niezer's most frequent co-authors
- Kyle David Roseberry2 shared papers
- Krista M. Brucker, MD1 shared paper
- Carter Evan Duggan, MD1 shared paper
Recent publications by Dr. Niezer
Mol Psychiatry
Anxiety DisordersBipolar DisorderDepression
See who Dr. Niezer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Niezer 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. Joseph O'Hara Niezer received $4,212 in industry payments from 2017 to 2024
CMS Open Payments shows 317 general payments to Dr. Niezer from 26 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 97% of the total. Sunovion Pharmaceuticals Inc. paid the most, $964.
General payments to Dr. Niezer by program year, 2017 to 2024
General payments to Dr. Niezer by kind, 2017 to 2024
$4.2Kin total
- Food and beverage$4,09697%
- Education$1153%
Companies that paid Dr. Niezer the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph O'Hara Niezer graduated from Indiana University School of Medicine
Dr. Niezer graduated from Indiana University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph O'Hara Niezer'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 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 |
| 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. Joseph O'Hara Niezer
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. Joseph O'Hara Niezer's NPI number?
Dr. Joseph O'Hara Niezer's NPI number is 1538509476. It was assigned on June 25, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph O'Hara Niezer?
Dr. Joseph O'Hara Niezer is a psychiatrist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Joseph O'Hara Niezer practice?
Dr. Niezer practices at 2750 E Belt Line NE Ave, Grand Rapids, MI 49525. Dr. Niezer's primary practice is Corewell Health Medical Group West in Grand Rapids, Michigan. Dmand AI also links Dr. Niezer to 1 group practice or clinic.
What is Dr. Joseph O'Hara Niezer's office phone number?
The practice phone on file for Dr. Niezer is (877) 362-8362.
What is Dr. Joseph O'Hara Niezer's medical license number?
Dr. Niezer holds Michigan license 4301510036.
Which hospitals is Dr. Joseph O'Hara Niezer affiliated with?
Dr. Niezer is affiliated with Corewell Health Grand Rapids Hospitals - Butterworth.
What medical group is Dr. Joseph O'Hara Niezer part of?
Dr. Niezer is linked to Corewell Health Medical Group West.
Does Dr. Joseph O'Hara Niezer accept Medicare?
Yes. CMS data shows Dr. Niezer billed Medicare for 125 services in 2024, and Dr. Niezer accepts Medicare assignment.
Does Dr. Joseph O'Hara Niezer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Niezer as offering telehealth services.
How many Medicare patients does Dr. Joseph O'Hara Niezer see?
CMS counts 37 Medicare patients who saw Dr. Niezer in 2024, with an average age of 67.
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What services does Dr. Joseph O'Hara Niezer bill to Medicare?
In 2024, Dr. Niezer's most billed Medicare services were office visit, established patient (99214), psychiatric service (90792) and health assessment (96127).
Where did Dr. Joseph O'Hara Niezer go to medical school?
Dr. Niezer graduated from Indiana University School of Medicine in 2013.
What drugs does Dr. Joseph O'Hara Niezer prescribe most?
In 2024 Medicare Part D data, Dr. Niezer's most prescribed drugs by claims were Lamotrigine, Trazodone HCl and Bupropion XL.
Has Dr. Joseph O'Hara Niezer received payments from drug or device companies?
CMS Open Payments shows $4,212 in general payments to Dr. Niezer from 26 companies from 2017 to 2024. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Joseph O'Hara Niezer been practicing?
Dr. Niezer graduated from medical school in 2013, 13 years ago.
Does Dr. Joseph O'Hara Niezer do research?
Dmand AI links 2 publications to Dr. Niezer, published from 2017 to 2018.
Who does Dr. Joseph O'Hara Niezer publish with?
Dr. Niezer's most frequent co-authors are Kyle David Roseberry (2 shared papers), Krista M. Brucker, MD (1 shared paper) and Carter Evan Duggan, MD (1 shared paper).
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