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TAMMY O GRAVES DO
NPI 1215917851
Pediatrics - Pediatric Critical Care Medicine in Kalamazoo, MI

Active since January 19, 2006PECOS Enrolled
601 JOHN ST, SUITE E352, KALAMAZOO, MI 49007(269) 341-8986(269) 341-6236 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Tammy O Graves Do NPPES

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

TAMMY O GRAVES DO (NPI 1215917851) is an individual pediatric critical care medicine provider in Kalamazoo, Michigan, licensed in Michigan (5101009445) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215917851
Entity TypeIndividualFemale
Primary Taxonomy2080P0203X
Provider Legal NameTAMMY O GRAVESCredential: DO
Location Address601 JOHN ST, SUITE E352Kalamazoo, MI 49007-5341
Mailing Address601 John St, Suite E352Kalamazoo, MI 49007-5341 · (269) 341-8986 · Fax (269) 341-6236
Phone(269) 341-8986
Fax(269) 341-6236
Sole ProprietorNo
Enumeration DateJanuary 19, 2006
Last NPPES UpdateNovember 27, 2023
NPPES CertifiedOctober 9, 2020
✔ NPI 1215917851 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0203X
License✔ Licensed in MI · 5101009445
Definition
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.
601 JOHN ST, Kalamazoo, MI 49007
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Other Names 1

Former Name (1)Tammy O Drew Do

Other Identifiers 1

Medicaid3041221MI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tammy O Graves Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Tammy Graves reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Bronson Methodist Hospital
Same address
Hospitalist
601 JOHN STREET
Kalamazoo, MI 49007
  • Reassigned Medicare billing, Michigan enrollment
  • 1,133 clinicians in this Medicare group
NPI 1417961137 (269) 341-7654

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

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.

DR. AMANDA KEATING WALKER D.O.
Obstetrics & Gynecology
601 JOHN ST, SUITE N1200
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7979
ANDREW W. WALKER MD
Emergency Medicine
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (847) 404-6853
JUSTINE MELODIE OUDSEMA PA-C
Physician Assistant
601 JOHN ST, BOX 74
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-8481
OCHUKO ANDREW OGHOR CRNA
Nurse Anesthetist, Certified Registered
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (239) 341-7654
MARK J TIESZEN MD
Internal Medicine (Critical Care Medicine)
601 JOHN ST, SUITE M-510
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7762
DR. ERIC S SHAY M.D.
Internal Medicine
601 JOHN ST, SUITE M-170
KALAMAZOO, MI 49007
Kalamazoo County (269) 381-5060
EVGENIIA MORLEY RD
Dietitian, Registered
601 JOHN ST
KALAMAROO, MI 49007
Kalamazoo County (269) 341-6615
SELECT HOSPITALISTS, PLLC
Internal Medicine
601 JOHN ST
KALAMAZOO, MI 49007
Kalamazoo County (269) 341-7100

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 Tammy Graves's NPI number?

The NPI number for Tammy Graves is 1215917851. It was assigned to this individual provider in the NPPES registry on January 19, 2006. The provider is also known as Tammy O Drew Do.

Where is Tammy Graves located?

Tammy Graves practices at 601 John St Suite E352, Kalamazoo, MI 49007. The listed phone number is (269) 341-8986.

What is Tammy Graves's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Tammy Graves enrolled in Medicare?

Yes. Tammy Graves is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tammy Graves's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Graves reassigns Medicare benefits to Bronson Methodist Hospital (Kalamazoo, MI). The 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 Tammy Graves's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tammy Graves was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.