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THOMAS BARKER MD
NPI 1497448773
Internal Medicine in Lansing, MI

Active since June 01, 2023PECOS Enrolled
2900 COLLINS RD, LANSING, MI 48910(517) 975-6000 Get Directions Write a Review

NPPES record last updated: June 22, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Thomas Barker Md NPPES

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

THOMAS BARKER MD (NPI 1497448773) is an individual internal medicine provider in Lansing, Michigan, licensed in Michigan (4301517962) and active in the NPI registry since June 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Lansing, and is a graduate of Michigan State University College Of Human Medicine (2023).

NPPES Registry Identity

NPI1497448773
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameTHOMAS BARKERCredential: MD
Location Address2900 COLLINS RDLansing, MI 48910-8394
Mailing Address3955 Patient Care Dr Ste ALansing, MI 48911-4271 · (517) 374-7600 · Fax (885) 480-9150
Phone(517) 975-6000
Sole ProprietorNo
Medical School CMSMichigan State University College Of Human MedicineGraduated 2023
Enumeration DateJune 1, 2023
Last NPPES UpdateJune 22, 2026
NPPES CertifiedJune 22, 2026
✔ NPI 1497448773 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301517962
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 4351051047 (MI)
2900 COLLINS RD, Lansing, MI 48910
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Secondary Practice Location 1

Location 13955 Patient Care Dr Ste ALansing, MI 48911-4271 · Phone (517) 374-7600 · Fax (885) 480-9150

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Priority Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thomas Barker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9133587561
PECOS Enrollment IDI20260715002085
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 Thomas Barker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Capital Internal Medicine Associates P.C.
1.7 mi
Internal Medicine
3955 PATIENT CARE WAY, SUITE A
Lansing, MI 48911
  • Reassigned Medicare billing, Michigan enrollment
  • 108 clinicians in this Medicare group
NPI 1780629832 (517) 374-7600

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48910 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
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.

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.

ANNA SALL DO
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
STEPHEN CAUCCI
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
DR. SAMANTHA LOEW DO
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
NATASHA TARIQ MD
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
MRS. LAUREEN ELIZABETH HAHN CRNA
Nurse Anesthetist, Certified Registered
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
SABRINA WOESSNER DO
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
KATHRYN PAWLOWSKI PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000
BROOKE JOHNSTON DO
Student in an Organized Health Care Education/Training Program
2900 COLLINS RD
LANSING, MI 48910
Ingham County (517) 975-6000

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 Thomas Barker's NPI number?

The NPI number for Thomas Barker is 1497448773. It was assigned to this individual provider in the NPPES registry on June 1, 2023.

Where is Thomas Barker located?

Thomas Barker practices at 2900 Collins Rd, Lansing, MI 48910. The listed phone number is (517) 975-6000.

What is Thomas Barker's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Thomas Barker enrolled in Medicare?

Yes. Thomas Barker is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Barker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Barker reassigns Medicare benefits to Capital Internal Medicine Associates P.C. (Lansing, 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 Thomas Barker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Barker accept?

Health plans from Priority Health list Thomas Barker 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.

When was this NPI record last updated?

The NPPES record for Thomas Barker was last updated on June 22, 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.