NPPES file of Aug 9, 2026

Lynn M. Larson, D.O.

Internal Medicine Physician · Owosso, MI

Lynn M. Larson, D.O. is an internal medicine physician with a practice address in Owosso, Michigan, and NPI 1104021765, issued on Jun 15, 2007. Check the license (Michigan 5101017147, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1104021765
Name
Lynn M. Larson
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
5101017147 MI
Self-reported in NPPES; status is on the state search
Practice location
818 W King St Ste 101, Owosso, MI 48867
Phone
(989) 729-4961
Enumerated
Jun 15, 2007
Record last updated
Oct 16, 2024
Fax
(989) 729-4958
Medicaid ID
1104021765 MI
Medicare enrollment
Enrolled (PECOS I20190111001101); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 818 W King St Ste 101

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Phincy Arangattu, MDFamily Medicine Physician1760008213
  2. Kaelie GardnerFamily Nurse Practitioner1326759135
  3. Robert Han, MDInternal Medicine Physician1669714242
  4. Marcos Iza, MDFamily Medicine Physician1629005970
  5. Karlee Krokos, NP-CFamily Nurse Practitioner1528641479
  6. Jennica LongPhysician Assistant1235951328

Verify Lynn M. Larson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 5101017147
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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32% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,169 Medicare Part D claims for 100 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 57 claims were for opioids.

  1. Lynn Larson2,169
  2. Specialty average3,176

Most prescribed

  1. Trazodone Hcl112 claims
  2. Levothyroxine Sodium79 claims
  3. Atorvastatin Calcium77 claims
  4. Citalopram Hbr77 claims
  5. Furosemide74 claims
  6. Lisinopril62 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 56.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score67.8
  2. Costout of 100 · 30%60.1
  3. Promoting interoperabilityout of 100 · 25%0.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $87.50

4 payments; by number, the most common kind was food and beverage; the largest payer was Vertex Pharmaceuticals Incorporated. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lynn Larson$87.50
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Memorial HospitalOwosso, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

15 internal medicine physician records list a practice address in Owosso

They are 15 of the 1,044 NPPES records with a practice address in Owosso, and 5,735 internal medicine physician records in Michigan.

Other internal medicine physician records in Michigan

  1. Jamie Therese Abad, MDDetroit, MI1700573359
  2. Tomas Abalo, M.D.Iron Mountain, MI1336199975
  3. Ali Abbas, M.D.Pontiac, MI1972167526
  4. Sura Abbas, MDWarren, MI1801687405
  5. Ramzi Abbasi, MDSaginaw, MI1164270005
  6. Saadat Abbasi, MDKalamazoo, MI1912005596
  7. Shahzaman Abbasi, MDLansing, MI1376512111
  8. Youssef Abbiss, D.O.Mount Clemens, MI1982991881
  9. Valerie Abbott, MDSouthfield, MI1740289487
  10. Samer Abboud, MDSaginaw, MI1245804178

Common questions

What is Lynn M. Larson, D.O.'s NPI number?

Lynn M. Larson, D.O.'s National Provider Identifier (NPI) is 1104021765, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Lynn M. Larson, D.O. located?

The NPPES record lists a practice address at 818 W King St Ste 101, Owosso, MI, 48867. Phone: (989) 729-4961. Providers update this record themselves, so call before visiting.

How can I verify Lynn M. Larson, D.O.'s license?

NPPES lists Michigan license number 5101017147, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Lynn M. Larson, D.O. prescribe under Medicare Part D?

In 2024, Lynn M. Larson, D.O. had 2,169 Medicare Part D claims for 100 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Lynn M. Larson, D.O.'s MIPS final score?

The 2023 MIPS final score is 56.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.