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DR. LEIGH MARIE SEAMON D.O.
NPI 1821147422
Obstetrics & Gynecology - Gynecologic Oncology in Grand Rapids, MI

Active since January 10, 2007PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
145 MICHIGAN ST NE, SUITE 6300, GRAND RAPIDS, MI 49503(616) 486-6000(616) 486-2065 Get Directions Write a Review

NPPES record last updated: April 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 2, 2026, Feb 24, 2021, Dec 17, 2015 (3 updates tracked since 2015).

About Dr. Leigh Marie Seamon D.o. NPPES

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

DR. LEIGH MARIE SEAMON D.O. (NPI 1821147422) is an individual gynecologic oncology provider in Grand Rapids, Michigan, licensed in Ohio (34.008774) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with Corewell Health Zeeland Hospital, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1821147422
Entity TypeIndividualFemale
Primary Taxonomy207VX0201X
Provider Legal NameDR. LEIGH MARIE SEAMONCredential: D.O.
Location Address145 MICHIGAN ST NE, SUITE 6300Grand Rapids, MI 49503-2562
Mailing Address100 Michigan St NeGrand Rapids, MI 49503-2560 · (616) 486-6790
Phone(616) 486-6000
Fax(616) 486-2065
Sole ProprietorNo
Medical School CMSOtherGraduated 2000
Enumeration DateJanuary 10, 2007
Last NPPES UpdateApril 2, 20263 updates tracked since enumeration
NPPES CertifiedApril 2, 2026
✔ NPI 1821147422 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Gynecologic OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207VX0201X
License✔ Licensed in OH · 34.008774
Definition
An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications.
145 MICHIGAN ST NE, Grand Rapids, MI 49503
Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Leigh Marie Glasscock D.o.

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Leigh Marie Seamon D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123035789
PECOS Enrollment IDI20060307000773
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
86 services20 patients
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
81 services17 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
68 services31 patients
Administration of chemotherapy into vein, 1 hour or less 96413
Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.
64 services16 patients
Immunologic analysis for detection of tumor antigen, quantitative; ca 125 86304
This test checks for CA 125, a protein often found in higher amounts in individuals with certain types of tumors. It involves analyzing a blood sample in a lab. It's a quantitative test, meaning it measures the level of CA 125 in your blood.
61 services13 patients
Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
56 services15 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Corewell Health Zeeland Hospital

Acute Care Hospitals · Zeeland, MI
OwnershipVoluntary non-profit - Private
CMS Certification Number230003
Location8333 Felch StZeeland, MI 49464 · Ottawa County
Emergency services Birthing friendly

Spectrum Health United Hospital

Acute Care Hospitals · Greenville, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number230035
Location615 S Bower StreetGreenville, MI 48838 · Montcalm County
Birthing friendly

Spectrum Health

Acute Care Hospitals · Grand Rapids, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230038
Location100 Michigan St NEGrand Rapids, MI 49503 · Kent County
Emergency services Birthing friendly

Mercy Health Saint Mary's

Acute Care Hospitals · Grand Rapids, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number230059
Location200 Jefferson Avenue SEGrand Rapids, MI 49503 · Kent County
Emergency services Birthing friendly

Corewell Health Reed City Hospital

Critical Access Hospitals · Reed City, MI
OwnershipVoluntary non-profit - Private
CMS Certification Number231323
Location300 N Patterson, PO Box 75Reed City, MI 49677 · Osceola County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$166.68 typical visit price
range $54.34 – $166.68
Typical copayment $41.67 (range $13.58 – $41.67)
Most-billed visit code 99205
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.54
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JAMES D THOMPSON MD
Otolaryngology
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 267-7758
STEPHANIE F WILLIAMS MD
Internal Medicine (Medical Oncology)
145 MICHIGAN ST NE, SUITE 5200
GRAND RAPIDS, MI 49503
Kent County (616) 486-5933
KELLY ANN CONLEY NP
Nurse Practitioner (Women's Health)
145 MICHIGAN ST NE, SUITE 6300
GRAND RAPIDS, MI 49503
Kent County (616) 486-6000
DR. ROSS SCHULTHEISS PHARM.D.
Pharmacist
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 977-4840
AMELIA ROSE MROCH MS
Genetic Counselor, MS
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-6218
KRISTIN DIANE BROWN CNS
Registered Nurse (Oncology)
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-5700
DR. GORDON OLIVER DOWNEY M.D.
Obstetrics & Gynecology (Gynecologic Oncology)
145 MICHIGAN ST NE, SUITE 6300
GRAND RAPIDS, MI 49503
Kent County (616) 486-6000
KIMBERLY ANN TEXLEY-QUIGG N.P.
Nurse Practitioner (Women's Health)
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Kent County (616) 486-6333

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 Leigh Seamon's NPI number?

The NPI number for Leigh Seamon is 1821147422. It was assigned to this individual provider in the NPPES registry on January 10, 2007. The provider is also known as Dr. Leigh Marie Glasscock D.O..

Where is Leigh Seamon located?

Leigh Seamon practices at 145 Michigan St NE Suite 6300, Grand Rapids, MI 49503. The listed phone number is (616) 486-6000.

What is Leigh Seamon's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.

Is Leigh Seamon enrolled in Medicare?

Yes. Leigh Seamon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Leigh Seamon accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community, Oscar Insurance Company and Priority Health and 1 other insurer list Leigh Seamon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Leigh Seamon affiliated with any hospitals?

According to CMS data, Leigh Seamon is affiliated with Corewell Health Zeeland Hospital, Spectrum Health United Hospital, Spectrum Health, Mercy Health Saint Mary's and Corewell Health Reed City Hospital.

When was this NPI record last updated?

The NPPES record for Leigh Seamon was last updated on April 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.