Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Peter Gregory Gulick, DO

Individual provider Internal Medicine Physician · NPI 1255383238

Dr. Peter Gregory Gulick, DO is registered under Infectious Disease in Lansing, Michigan. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1972, 54 years ago. Practices with Great Lakes Bay Health Centers, a 85-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
54
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
MI
In the registry since
2006
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

5303 S Cedar St
Lansing, MI 48911-3800
Phone: (517) 887-4302
Fax: (517) 887-4437
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1522 Janes Ave, Saginaw, MI 48601-1819 — (989) 907-2738

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence 5101009127 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 5101009127 (MI)
Medical Oncology Physician Taxonomy 207RX0202X · Licence 5101009127 (MI)

Record details

NPI number1255383238
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESApril 8, 2021
Certification dateApril 8, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesHEMATOLOGY/ONCOLOGY
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1972 (54 years in practice)
Group practice Great Lakes Bay Health Centers — 85 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients20
Services billed 73 a service is one billed item, such as a visit, a test or a procedure
Average patient age61

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $61,075 26 payments
Travel and Lodging $10,320 19 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $4,607 123 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Great Lakes Bay Health Centers

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 85 clinicians in the practice; 12 are shown here.

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