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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK A. MILLS MD
NPI 1104807452
Internal Medicine in Lansing, MI

Active since November 11, 2005
53.64/100
CMS Quality Rating
6465 MILLENNIUM, SUITE 100, LANSING, MI 48917(517) 367-5220(517) 367-5245 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mark A. Mills Md NPPES

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

DR. MARK A. MILLS MD (NPI 1104807452) is an individual internal medicine provider in Lansing, Michigan, licensed in Michigan (4301049237) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1104807452
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK A. MILLSCredential: MD
Location Address6465 MILLENNIUM, SUITE 100Lansing, MI 48917-7831
Mailing Address401 S Ballenger HwyFlint, MI 48532-3638 · (810) 342-1000 · Fax (810) 342-1590
Phone(517) 367-5220
Fax(517) 367-5245
Sole ProprietorNo
Enumeration DateNovember 11, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1104807452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301049237
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.
6465 MILLENNIUM, Lansing, MI 48917
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Other Identifiers 7

Other204119MI · Mclaren Health Plan
OtherF05598MI · Health Net Federal Servic
Other7720197MI · Aetna
Other0400264MI · Physicians Health Plan
Other204119MI · Health Advantage
Other1103302772MI · Blue Cross Blue Shield
Medicaid4130522MI

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.

53.64/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality14.13
Promoting Interoperability98
Improvement Activities20
Cost48.93

Other Providers at the Same Location NPPES 4

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

DR. HUGH F BRAINARD M.D.
Pediatrics
6465 MILLENNIUM, SUITE 100
LANSING, MI 48917
Eaton County (517) 975-3720
HOLLY J CROUCH PTA
Physical Therapy Assistant
6465 MILLENNIUM
LANSING, MI 48917
Eaton County (517) 975-9900
DR. CRAIG A WHEELER MD
Internal Medicine
6465 MILLENNIUM, SUITE 100
LANSING, MI 48917
Eaton County (517) 367-5220
DANIEL J MOORE PA-C
Physician Assistant
6465 MILLENNIUM, SUITE 100
LANSING, MI 48917
Eaton County (517) 975-3720

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 Mark Mills's NPI number?

The NPI number for Mark Mills is 1104807452. It was assigned to this individual provider in the NPPES registry on November 11, 2005.

Where is Mark Mills located?

Mark Mills practices at 6465 Millennium Suite 100, Lansing, MI 48917. The listed phone number is (517) 367-5220.

What is Mark Mills's specialty?

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

When was this NPI record last updated?

The NPPES record for Mark Mills was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.