Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. John Peyton Speck, MD

Individual provider Specialist · NPI 1740227768

Dr. John Peyton Speck, MD practises Nephrology in Berkley, Michigan. Graduated from Wayne State University School of Medicine in 1977, 49 years ago. Practices with Nephrology Consultants PC, a 5-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
49
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

27901 Woodward Ave Ste 210
Berkley, MI 48072-0919 Not confirmed with CMS for 13 years — call before visiting
Phone: (248) 414-5377
Fax: (248) 541-0542
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 4301039812 (MI)

Record details

NPI number1740227768
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2006
Last updated in NPPESNovember 16, 2012

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice Nephrology Consultants Pc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients17
Services billed 222 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Nephrology Consultants PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Berkley