Dr. Phillip B. Nahirniak, DO
- Medicare services, 2024
- 490
- Medicare patients, 2024
- 251
- Part D claims, 2024
- 57
- Hospital affiliations
- 3
- Industry payments
- $8,466
- Practice address
- 1447 N Harrison, Saginaw, MI 48602
- Practice phone
- Call (989) 583-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Nahirniak'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. Phillip B. Nahirniak is a general surgeon in Saginaw, Michigan
Dr. Nahirniak practices at Covenant Medical Center Harrison in Saginaw, Michigan, part of Covenant HealthCare.
Dr. Nahirniak's NPI, 1437681327, was assigned on March 30, 2017. Dr. Nahirniak graduated from Michigan State University College of Osteopathic Medicine in 2017. Dr. Nahirniak holds Michigan license 5101026882.
- NPI
- 1437681327NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395014153
- NPI enumeration date
- March 30, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (989) 583-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Phillip B. Nahirniak practices at Covenant Medical Center Harrison in Saginaw, Michigan
Dr. Nahirniak's primary practice is Covenant Medical Center Harrison, at 1447 N Harrison, Saginaw, MI 48602 in Saginaw County. The practice phone is (989) 583-6000.
- Covenant Medical Center Harrison1447 N Harrison, Saginaw, MI 48602 · Saginaw CountyPhone(989) 583-6000
Source: Dmand AI Affiliation Data
Dr. Phillip B. Nahirniak is affiliated with 4 sites of care and 4 medical groups
Dr. Nahirniak's primary practice is Covenant Medical Center Harrison in Saginaw, Michigan, part of Covenant HealthCare. Dr. Nahirniak is also affiliated with Hills & Dales Healthcare. The medical group on file is Covenant Medical Group. Dmand AI also links Dr. Nahirniak to 1 more hospital, 3 medical groups and 1 group practice or clinic, 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. Phillip B. Nahirniak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nahirniak practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Covenant Medical Center Harrison | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Phillip B. Nahirniak is one of 1,095 general surgeons in Michigan
Surgery is Dr. Nahirniak's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nahirniak is licensed in Michigan.
Specialties and state licenses
- Surgery, MichiganPrimary
General surgeons near Dr. Nahirniak
Counts of general surgeons 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. Phillip B. Nahirniak billed Medicare for 490 services in 2024
CMS data shows 490 Medicare services from Dr. Nahirniak across 9 procedure codes in 2024, for 251 Medicare patients. Medicare paid $37,103 for them.
Dr. Nahirniak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 952024: 490416%
Where Dr. Nahirniak's Medicare services took place, 2024
- In an office143%
- In a facility47697%
Dr. Nahirniak compared with the Michigan median for general surgeons, 2024
- Dr. Nahirniak
- Michigan median
- Medicare services
- 490vs 1263.9 times
- Medicare patients
- 251vs 1072.3 times
- Part D claims
- 21vs 3030% below
Medians across 1,046 general surgeons in Michigan with Dmand AI profiles that report each measure.
Dr. Nahirniak'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. Phillip B. Nahirniak treated 251 Medicare patients in 2024, average age 77
CMS counts 251 Medicare patients who saw Dr. Nahirniak in 2024. The largest group is 75 to 84, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.14, 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. Nahirniak's median patient age at 67, with 50% women.
Dr. Nahirniak's Medicare patients by age, 2024
Dr. Nahirniak's Medicare patients by sex, 2024
- Women14959%
- Men10241%
Chronic conditions among Dr. Nahirniak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis71%
- Ischemic heart disease49%
- Mood disorders49%
- Anxiety48%
- Chronic kidney disease45%
- Depression44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nahirniak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Phillip B. Nahirniak wrote 57 Medicare Part D claims in 2024
In 2024, Dr. Nahirniak wrote 57 Medicare Part D claims for 37 patients. 95% of them were for generic drugs. CMS names the drug for 21 of them, across 1 drug with 11 or more claims each, at $30 in total drug cost. In 2019, CMS named 16 claims across 1 drug.
Dr. Nahirniak's Part D claims by kind of drug, 2024
- Generic54 claims95%
- Brand-name and other3 claims5%
Dr. Nahirniak'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. Nahirniak's Part D claims, 2024
- Opioids46%26 of 57 claims
- Antibiotics19%11 of 57 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, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 162024: 2131%
Drugs named by CMS: 1 in 2024, 1 in 2019.
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. Phillip B. Nahirniak ranks in the 62nd percentile for removal of tissue in Medicare
Dr. Nahirniak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of removal of tissue by Dr. Nahirniak, more than 62% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Nahirniak ranks in Medicare procedure volume
- Removal of tissue
- 62nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Phillip B. Nahirniak received $8,466 in industry payments from 2017 to 2025
CMS Open Payments shows 21 general payments to Dr. Nahirniak from 10 drug and device companies from 2017 to 2025. Education make up the largest share, 71% of the total. Intuitive Surgical, Inc. paid the most, $7,142.
General payments to Dr. Nahirniak by program year, 2017 to 2025
General payments to Dr. Nahirniak by kind, 2017 to 2025
- Education$6,00071%
- Food and beverage$1,72120%
- Travel and lodging$7369%
- Gifts$90%
Companies that paid Dr. Nahirniak the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Phillip B. Nahirniak graduated from Michigan State University College of Osteopathic Medicine
Dr. Nahirniak graduated from Michigan State University College of Osteopathic Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Phillip B. Nahirniak'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)Doctors and Clinicians Utilization Data (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. Phillip B. Nahirniak
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. Phillip B. Nahirniak's NPI number?
Dr. Phillip B. Nahirniak's NPI number is 1437681327. It was assigned on March 30, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Phillip B. Nahirniak?
Dr. Phillip B. Nahirniak is a general surgeon in Saginaw, Michigan. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Phillip B. Nahirniak practice?
Dr. Nahirniak practices at 1447 N Harrison, Saginaw, MI 48602. Dr. Nahirniak's primary practice is Covenant Medical Center Harrison in Saginaw, Michigan, part of Covenant HealthCare. Dmand AI also links Dr. Nahirniak to 1 hospital, 3 medical groups and 1 group practice or clinic.
What is Dr. Phillip B. Nahirniak's office phone number?
The practice phone on file for Dr. Nahirniak is (989) 583-6000.
What is Dr. Phillip B. Nahirniak's medical license number?
Dr. Nahirniak holds Michigan license 5101026882.
Which hospitals is Dr. Phillip B. Nahirniak affiliated with?
Dr. Nahirniak practices at Covenant Medical Center Harrison in Saginaw, Michigan. Dr. Nahirniak is also affiliated with Hills & Dales Healthcare. Dmand AI links Dr. Nahirniak to 1 more hospital.
What medical group is Dr. Phillip B. Nahirniak part of?
Dr. Nahirniak is linked to Covenant Medical Group. Dmand AI links Dr. Nahirniak to 3 more medical groups.
Does Dr. Phillip B. Nahirniak accept Medicare?
Yes. CMS data shows Dr. Nahirniak billed Medicare for 490 services in 2024, and Dr. Nahirniak accepts Medicare assignment.
How many Medicare patients does Dr. Phillip B. Nahirniak see?
CMS counts 251 Medicare patients who saw Dr. Nahirniak in 2024, with an average age of 77.
What services does Dr. Phillip B. Nahirniak bill to Medicare?
In 2024, Dr. Nahirniak's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99231) and hospital inpatient care (99223).
Show 4 more questionsShow fewer questions
Where did Dr. Phillip B. Nahirniak go to medical school?
Dr. Nahirniak graduated from Michigan State University College of Osteopathic Medicine in 2017.
What drugs does Dr. Phillip B. Nahirniak prescribe most?
In 2024 Medicare Part D data, Dr. Nahirniak's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Phillip B. Nahirniak received payments from drug or device companies?
CMS Open Payments shows $8,466 in general payments to Dr. Nahirniak from 10 companies from 2017 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Phillip B. Nahirniak been practicing?
Dr. Nahirniak graduated from medical school in 2017, 9 years ago.
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