Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Michael Casmir Kowalczyk , DO

Internal Medicine โ€ข Lansing, MI

Active NPI 1649277211 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

3955 Patient Care Dr Ste A
Lansing, MI 489114271

Call 5173747600 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

3955 Patient Care Dr Ste A

Lansing, MI 489114271

Telephone 5173747600
Fax 8854809150
Organization at the Same NPPES Address or Phone
Anne Evelyn Missavage Md Pc Facility NPI 1457673881

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 2 distinct group names: Capital Internal Medicine Associates P.C.; Eaton Rapids Medical Center. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Michigan State University College Of Osteopathic Medicine

Graduation Year

1988

Medicare patients

551 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $126,918 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $102,083 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

30-day fills

23,404 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$1,420,196 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $1,412.03 across 73 records.

By nature of payment

  • Food and Beverage: $1,412.03 across 73 records.

Reporting-company totals (3 largest of 23)

  • ABBVIE INC.: $225.39 across 17 records.
  • Vanda Pharmaceuticals Inc.: $185.23 across 8 records.
  • Pfizer Inc.: $165.28 across 10 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

38 years (graduated 1988)

CMS Doctors and Clinicians data list 1988 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2005

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Kowalczyk has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Kowalczyk as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Lansing and Michigan

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: 414. Middle half: 229 to 695.

More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: 502. Middle half: 235 to 939.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: $45,487. Middle half: $21,484 to $65,984.

A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $45,163. Middle half: $22,487 to $79,883.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: $31,698. Middle half: $15,234 to $51,428.

A higher Medicare payment amount than 85% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $34,631. Middle half: $16,935 to $61,333.

Medicare Part D prescriptions

More Part D prescriptions than 90% of clinicians listed under Internal Medicine in Lansing, MI (2024, 94 clinicians with data). Median for this group: 148. Middle half: 83 to 2,213.

More Part D prescriptions than 90% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: 801. Middle half: 94 to 5,032.

Part D drug cost

A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Lansing, MI (2024, 94 clinicians with data). Median for this group: $13,988. Middle half: $1,477 to $261,021.

A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: $66,958. Middle half: $1,946 to $462,816.

135 active clinicians are listed under Internal Medicine with a practice address in Lansing, MI (5,741 in Michigan).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Lansing

9.6% of these 135 clinicians have the CMS telehealth indicator.

51.1% of these 135 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 โ€“ December 31, 2025): 73 records totaling $1,412.03.

Manufacturer Payment Nature Product Type Amount ($)
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
FARXIGA General $106.00
Vanda Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
FANAPT General $36.87
Vanda Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
FANAPT General $29.77
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $29.21
Vanda Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
FANAPT General $27.96
Axsome Therapeutics, Inc.
Food and Beverage
In-kind items and services
Symbravo General $27.72
Paratek Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
NUZYRA General $27.51
Axsome Therapeutics, Inc.
Food and Beverage
In-kind items and services
Auvelity General $26.87
Vanda Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
FANAPT General $25.07
Antares Pharma, Inc.
Food and Beverage
In-kind items and services
XYOSTED General $24.91
ABBVIE INC.
Food and Beverage
In-kind items and services
TEFLARO General $23.68
ViiV Healthcare Company
Food and Beverage
In-kind items and services
APRETUDE General $23.58
Paratek Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
NUZYRA General $23.14
Axsome Therapeutics, Inc.
Food and Beverage
In-kind items and services
Auvelity General $23.02
ViiV Healthcare Company
Food and Beverage
In-kind items and services
APRETUDE General $22.83
Axsome Therapeutics, Inc.
Food and Beverage
In-kind items and services
Auvelity General $22.23
ABBVIE INC.
Food and Beverage
In-kind items and services
RINVOQ General $22.18
Otsuka America Pharmaceutical, Inc.
Food and Beverage
In-kind items and services
REXULTI General $22.17
Pfizer Inc.
Food and Beverage
In-kind items and services
ELIQUIS General $22.07
Pfizer Inc.
Food and Beverage
In-kind items and services
ELIQUIS General $22.07
Pfizer Inc.
Food and Beverage
In-kind items and services
ELIQUIS General $22.07
Pfizer Inc.
Food and Beverage
In-kind items and services
ELIQUIS General $22.07
Otsuka Pharmaceutical Development & Commercialization, Inc.
Food and Beverage
In-kind items and services
REXULTI General $21.54
Radius Health, Inc.
Food and Beverage
In-kind items and services
Tymlos General $20.98
Antares Pharma, Inc.
Food and Beverage
In-kind items and services
XYOSTED General $20.77

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ€“2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2017โ€“2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
289 129 $105.12 $79.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
202 116 $180.03 $125.39
77080 Dxa bone density measurement of hip, pelvis, spine
180 180 $69.00 $37.65
77089 Calculation of trabecular bone score (tbs) using imaging data with interpretation and report on fracture risk
176 176 $74.00 $38.69
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
130 100 $124.72 $90.24
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
99 99 $233.00 $131.41
G0444 Annual depression screening, 5 to 15 minutes
94 94 $32.65 $18.37
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
71 40 $158.57 $119.78
99239 Hospital discharge day management, more than 30 minutes
64 63 $206.43 $113.42
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
35 35 $236.47 $170.44
99238 Hospital discharge day management, 30 minutes or less
32 32 $145.00 $81.34
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
28 27 $21.00 $16.60
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
23 14 $65.00 $49.88
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
22 22 $298.00 $168.24
99495 Transitional care management services for problem of at least moderate complexity
20 16 $270.00 $206.22
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
19 18 $94.00 $53.04
G0008 Administration of influenza virus vaccine
18 18 $34.72 $30.79
90662 Influenza vaccine split virus, preservative free
17 17 $87.82 $81.24
83036 Hemoglobin a1c level
16 15 $17.00 $9.52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
13 13 $182.12 $131.74

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 516 41,962 $8,457.23 192
Losartan Potassium Losartan Potassium 410 33,117 $5,774.95 150
Levothyroxine Sodium Levothyroxine Sodium 393 30,952 $6,065.69 130
Amlodipine Besylate Amlodipine Besylate 378 30,739 $2,715.36 136
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 363 9,613 $7,498.73 86
Metoprolol Succinate Metoprolol Succinate 298 23,207 $5,403.32 98
Rosuvastatin Calcium Rosuvastatin Calcium 293 24,729 $5,871.18 100
Omeprazole Omeprazole 268 22,035 $3,959.54 95
Lisinopril Lisinopril 256 20,234 $2,681.90 106
Pantoprazole Sodium Pantoprazole Sodium 211 15,897 $3,869.91 98
Eliquis Apixaban 193 10,810 $199,487.23 65
Gabapentin Gabapentin 192 12,297 $3,967.52 65
Metformin Hcl Metformin Hcl 179 14,746 $2,137.26 66
Furosemide Furosemide 178 12,470 $1,219.35 72
Tamsulosin Hcl Tamsulosin Hcl 160 13,285 $3,861.88 65
Trazodone Hcl Trazodone Hcl 150 11,324 $1,850.60 53
Allopurinol Allopurinol 148 12,398 $2,103.10 46
Simvastatin Simvastatin 147 12,122 $1,800.38 46
Alprazolam Alprazolam 143 4,897 $818.51 33
Sertraline Hcl Sertraline Hcl 133 9,716 $1,695.50 49
Metoprolol Tartrate Metoprolol Tartrate 130 10,732 $1,041.23 44
Trulicity Dulaglutide 129 6,086 $197,725.76 29
Jardiance Empagliflozin 126 7,860 $148,073.69 38
Hydrochlorothiazide Hydrochlorothiazide 120 9,390 $615.84 48
Potassium Chloride Potassium Chloride 120 8,679 $4,663.72 54

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2025-03-18
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES MI MK010436

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Michigan Department of Licensing and Regulatory Affairs.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
2901730-11 (MI)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20040722001237

Enrollment State Jurisdiction

MI

PECOS Control ID

0244219194

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Eaton Rapids Medical Center

1500 S Main St, Eaton Rapids, MI 488271952

Phone: 5179994500

Capital Internal Medicine Associates P.c.

3955 Patient Care Dr, Lansing, MI 489114299

Phone: 5173747600

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Dr. Shweta Bhatnagar , DO

Internal Medicine

NPI 1366023830

Doctor of Osteopathic Medicine (D.O.)

Dr. Hitesh Bhatt , DO

Internal Medicine

NPI 1477716579

Doctor of Osteopathic Medicine (D.O.)

Annelise Bowman , NP

Nurse Practitioner - Family

NPI 1225871148

Nurse Practitioner

Jennifer Caswell , PA

Physician Assistant

NPI 1972830636

Physician Assistant

Felix Chalu , NP-C

Nurse Practitioner

NPI 1730686916

Nurse Practitioner (Certified)

Sarah Corgan , NP

Nurse Practitioner - Gerontology

NPI 1962157586

Nurse Practitioner

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
๐Ÿ“
Updated Practice Location March 18, 2025

Registered at 3955 PATIENT CARE DR STE A, LANSING, MI 489114271 (Tel: 5173747600)

๐Ÿ“
Updated Business Mailing Address March 18, 2025

Registered at 3955 PATIENT CARE DR STE A, LANSING, MI 489114271 (Tel: 5173747600)

๐Ÿ“
Practice Location (Initial Record) February 03, 2015

Registered at 3937 PATIENT CARE WAY, STE 104, LANSING, MI 489114287 (Tel: 5173744202)

๐Ÿ“
Business Mailing Address (Initial Record) February 03, 2015

Registered at 3955 PATIENT CARE DR, LANSING, MI 48911 (Tel: 5173747600)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) February 03, 2015

Recorded as MICHAEL KOWALCZYK, DO

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) February 03, 2015

Internal Medicine (license number reported to NPPES: MI MK010436)

๐Ÿ”„
NPI Profile Reactivated March 28, 2006

Record officially reactivated for active practice on March 28, 2006

โš ๏ธ
NPI Profile Deactivated March 17, 2006

NPPES lists this NPI as deactivated as of March 17, 2006; the reason is not published.

๐ŸŸข
Initial NPI Registration & Enumeration June 28, 2005

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1649277211
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 28, 2005
Last Update: March 18, 2025
Sole Proprietor: No

Other Internal Medicine Providers in Lansing

All Internal Medicine Providers in Lansing

Mailing Address

3955 Patient Care Dr Ste A

Lansing, MI 489114271

Phone: 5173747600

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.