HARMONIC MEDICAL GROUP OF MICHIGAN, P.C
NPI 1639931553
Family Medicine - Geriatric Medicine in Plymouth, MI

Q: What is Harmonic Medical Group Of Michigan, P.C's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Geriatric Medicine, with taxonomy code 207QG0300X.

Active since January 25, 2024

186 N MAIN ST FL 2, PLYMOUTH, MI 48170(862) 375-6089 Get Directions Write a Review

NPPES record last updated: May 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Harmonic Medical Group Of Michigan, P.c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HARMONIC MEDICAL GROUP OF MICHIGAN, P.C (NPI 1639931553) is a healthcare organization registered as a geriatric medicine in Plymouth, Michigan and active in the NPI registry since January 2024. The organization lists James Gera, Chief Executive Office, as its authorized official.

NPPES Registry Identity

NPI1639931553

Entity TypeOrganization

Primary Taxonomy207QG0300X

Legal Business NameHARMONIC MEDICAL GROUP OF MICHIGAN, P.C

Location Address186 N MAIN ST FL 2Plymouth, MI 48170-1236

Mailing Address119 S Main StSaint Charles, MO 63301-2802

Phone(862) 375-6089

Organization SubpartNo

Authorized OfficialJames GeraChief Executive Office · (314) 368-4224

Enumeration DateJanuary 25, 2024

Last NPPES UpdateMay 7, 2026

NPPES CertifiedMay 7, 2026

✔ NPI 1639931553 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyFamily Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207QG0300X

Definition

A family medicine physician with special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes, and the hospital.

Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X

Also ListedRegistered NurseTaxonomy 163W00000X

Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X

Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X

186 N MAIN ST FL 2, Plymouth, MI 48170

Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Harmonic Medical Group Of Michigan, P.c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 5 clinicians reassign Medicare billing to Harmonic Medical Group Of Michigan, P.C, which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (5)

Alicia Martinez, NP

Nurse Practitioner

NPI 1821130493

420 N JAMES RD
Columbus, OH 43219

(614) 257-5200

✔ PECOS166 mi

Alexa Chapman, NP

Nurse Practitioner

NPI 1629472840

119 S WESTERN AVE UNIT 1
Chicago, IL 60612

(800) 411-6768

✔ PECOS220 mi

Alex Mohseni, MD

Emergency Medicine

NPI 1508823246

4101 NORTHVIEW DR
Bowie, MD 20716

(301) 725-5652

✔ PECOS425 mi

Susan Overkamp, D.O.

Family Practice

NPI 1841631579

201 W BROADWAY STE 5B
Columbia, MO 65203

(314) 359-3151

✔ PECOS522 mi

Erica Hanson, GERONTOLOGICAL NP

Nurse Practitioner

NPI 1275624280

1000 S COLUMBIA RD
Grand Forks, ND 58201

(701) 780-6000

✔ PECOS765 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Harmonic Medical Group Of Michigan, P.C's NPI number?

The NPI number for Harmonic Medical Group Of Michigan, P.C is 1639931553. It was assigned to this organization in the NPPES registry on January 25, 2024.

Where is Harmonic Medical Group Of Michigan, P.C located?

Harmonic Medical Group Of Michigan, P.C is located at 186 N Main St Fl 2, Plymouth, MI 48170. The listed phone number is (862) 375-6089.

What is Harmonic Medical Group Of Michigan, P.C's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Geriatric Medicine, with taxonomy code 207QG0300X.

Is Harmonic Medical Group Of Michigan, P.C enrolled in Medicare?

Yes. Harmonic Medical Group Of Michigan, P.C is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Harmonic Medical Group Of Michigan, P.C?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to Harmonic Medical Group Of Michigan, P.C. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (3), Emergency Medicine (1) and Family Practice (1). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Harmonic Medical Group Of Michigan, P.C was last updated on May 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.