Marshall Barnett Sack, D.O.
Family Medicine Physician · Novi, MI
Marshall Barnett Sack, D.O. is a family medicine physician with a practice address in Novi, Michigan, and NPI 1629071170, issued on May 28, 2005. Check the license (Michigan 5101007596, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Marshall Barnett Sack
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 5101007596 MI
Self-reported in NPPES; status is on the state search - Practice location
- 39500 W 10 Mile RD, Novi, MI 48375
- Phone
- (248) 476-0035
- Enumerated
- May 28, 2005
- Record last updated
- Apr 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (248) 476-2418
- Medicaid ID
- 1411744 MI
- Medicare enrollment
- Enrolled (PECOS I20040428001315); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 1978
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 39500 W 10 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Marshall, PA-CPhysician Assistant1164825493
- Kelly Morgan, FNPFamily Nurse Practitioner1043804735
- Karen Resseguie, FNP-BCFamily Nurse Practitioner1356791479
Verify Marshall Barnett Sack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101007596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average family medicine physician in 2024
8,954 Medicare Part D claims for 658 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Rosuvastatin Calcium265 claims
- Lisinopril236 claims
- Amlodipine Besylate233 claims
- Buspirone Hcl222 claims
- Losartan Potassium221 claims
- Levothyroxine Sodium215 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.
Industry payments in 2024: $880.37
39 payments; by number, the most common kind was food and beverage; the largest payer was Supernus Pharmaceuticals, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Family Care Physicians, P.C.Novi, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall Barnett Sack among 6,013 family medicine physician records in Michigan
Marshall Barnett Sack, D.O. is one of 6,013 family medicine physician records with a practice address in Michigan. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1978 · median 2008 among the 3,493 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
51 family medicine physician records list a practice address in Novi
They are 51 of the 7,641 NPPES records with a practice address in Novi, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Novi → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Robert Brateman, MDNovi, MI 483751548224769
- Peter Bullach, MDNovi, MI 483751437113669
- Victoria Dooley, M.D.Novi, MI 483751073789616
- Jonathon Faber, D.O.Novi, MI 483751700048915
- Fallon Kapatais, M.DNovi, MI 483751477811925
- Kelly Krueger, D.O.Novi, MI 483751487632014
- Ron Kuzdak, DONovi, MI 483751689618449
- Deanna Master, MDNovi, MI 483751437168234
Common questions
What is Marshall Barnett Sack, D.O.'s NPI number?
Marshall Barnett Sack, D.O.'s National Provider Identifier (NPI) is 1629071170, issued on May 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Barnett Sack, D.O. located?
The NPPES record lists a practice address at 39500 W 10 Mile RD, Novi, MI, 48375. Phone: (248) 476-0035. Providers update this record themselves, so call before visiting.
How can I verify Marshall Barnett Sack, D.O.'s license?
NPPES lists Michigan license number 5101007596, 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 Marshall Barnett Sack, D.O. prescribe under Medicare Part D?
In 2024, Marshall Barnett Sack, D.O. had 8,954 Medicare Part D claims for 658 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.