Active NPI 1104807452 Individual Practitioner Male Practitioner

Dr. Mark A. Mills , MD

Internal Medicine • Lansing, MI

Professional Overview & Biography Verified Profile Summary

Dr. Mark Mills, MD is a registered healthcare professional specializing in Internal Medicine in Lansing, MI. Practice services are available at 6465 MILLENNIUM under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic, telephone medical discussion with physician. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

6465 Millennium
Suite 100

Lansing, MI 489177831

Telephone 5173675220

Fax 5173675245

Associated Practice Facility / Clinic

🏢 Select Specialty Hospital - Flint Inc Facility NPI 1912906934

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Lansing, MI

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 17.7 Yrs

State Avg: 26.5 Yrs

Regional Practice Density

138 Specialists

Practicing in Lansing, MI (6010 Statewide)

Telehealth Adoption Rate

9.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

25.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2022)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	249	135	$90.37	$64.63
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	189	99	$124.20	$95.42

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	361	153	$81.23	$67.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	152	90	$118.71	$97.85
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	22	$42.76	$35.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	339	183	$78.00	$51.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	188	133	$118.21	$79.35
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	55	42	$24.40	$13.07
99213 Established patient office or other outpatient visit, typically 15 minutes	53	43	$72.00	$51.74
99442 Telephone medical discussion with physician, 11-20 minutes	36	31	$90.74	$51.42
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	33	$109.00	$79.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	650	299	$70.38	$58.96
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	362	215	$107.41	$90.17
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	89	89	$215.35	$112.53
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	60	60	$323.20	$166.73
99496 Transitional care management services for problem of high complexity	32	29	$362.97	$199.47
99495 Transitional care management services for problem of at least moderate complexity	15	14	$256.01	$138.84

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	767	321	$69.68	$59.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	284	180	$106.43	$88.93
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	39	39	$196.94	$111.93
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	21	21	$111.43	$92.93
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	19	19	$312.00	$164.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	645	279	$73.12	$49.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	486	240	$107.50	$76.68
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	45	45	$211.00	$110.58
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	23	23	$116.30	$75.19
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit	14	14	$312.00	$160.26

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MI 4301049237

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

4130522 (MI)

Commercial Insurance / Payer ID Health Net Federal Servic

F05598 (MI)

Commercial Insurance / Payer ID Aetna

7720197 (MI)

Commercial Insurance / Payer ID Mclaren Health Plan

204119 (MI)

Commercial Insurance / Payer ID Health Advantage

204119 (MI)

Commercial Insurance / Payer ID Blue Cross Blue Shield

1103302772 (MI)

Commercial Insurance / Payer ID Physicians Health Plan

0400264 (MI)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

1 Associated Practitioners

Dr. Craig Wheeler , MD

Internal Medicine

NPI 1780665836

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 6465 MILLENNIUM, SUITE 100, LANSING, MI 489177831 (Tel: 5173675220)

📍

Updated Business Mailing Address July 08, 2007

Registered at 401 S BALLENGER HWY, FLINT, MI 485323638 (Tel: 8103421000)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as MARK MILLS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (License #4301049237 in MI)

🟢

Initial NPI Registration & Enumeration November 11, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Mark Mills. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1104807452

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: November 11, 2005

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

401 S Ballenger Hwy

Flint, MI 485323638

Phone: 8103421000

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.