Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nurse Practitioner

Marina M. Martin

Sees patients in Grand Blanc, MI · Lapeer, MI · Michigan

Summary

Marina M. Martin is a nurse practitioner at 11941 Belsay Rd, Grand Blanc, MI 48439. Phone: (810) 694-1970. Accepts Medicare assignment. In 2024, Marina M. Martin had 157 Original Medicare patients and 167 services. NPI 1649954397. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Nurse practitioner
  • Address: 11941 Belsay Rd, Grand Blanc, MI 48439 · Directions (2 more locations)
  • Phone: (810) 694‑1970
  • Medicare: Accepts Medicare assignment
  • Group practice: Theoria Medical (+1 more)
  • School: Oakland Univ, William Beaumont School Of Medicine · graduated 2016
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Marina M. Martin, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Marina M. Martin accept Medicare assignment?
Yes. Medicare's clinician data says Marina M. Martin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Marina M. Martin see?
In 2024, CMS data shows 157 Original Medicare patients and 167 services for Marina M. Martin. This counts Original Medicare only and measures volume, not quality.
What is Marina M. Martin's NPI number?
1649954397. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Marina M. Martin, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients157
Services billed to Medicare167
Different services or procedures5
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)158 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis64%
  • Ischemic heart disease58%
  • Chronic kidney disease55%
  • Diabetes51%

Practice locations

Addresses where Marina M. Martin is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marina M. Martin as a member of these groups (CMS data updated October 2, 2026).

  • Theoria Medical284 clinicians in the group
  • Complexcare Medical Group Midwest H PLLC127 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Michigan →

Other nurse practitioners in Grand Blanc

Clinicians with the same Medicare primary specialty in Grand Blanc, MI — not a recommendation.

All nurse practitioners in Grand Blanc →

Other clinicians in Theoria Medical

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

SchoolOakland Univ, William Beaumont School Of Medicine
Graduation year2016
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649954397
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians