NPPES file of Aug 9, 2026

Ronald Gene Zack, M.D.

Obstetrics & Gynecology Physician · Livonia, MI

Ronald Gene Zack, M.D. is an obstetrics & gynecology physician with a practice address in Livonia, Michigan, and NPI 1790729366, issued on Jun 15, 2006. Check the license (Michigan RZ033941, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1790729366
Name
Ronald Gene Zack
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
RZ033941 MI
Self-reported in NPPES; status is on the state search
Practice location
20276 Middlebelt RD, Livonia, MI 48152
Phone
(248) 476-4900
Enumerated
Jun 15, 2006
Record last updated
Aug 15, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(248) 476-5435
Medicaid IDs
445049710 MI
444671610 MI
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 20276 Middlebelt RD

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

  1. Kara Carravallah, DPTPhysical Therapist1083902738
  2. Robert Dock, DOObstetrics & Gynecology Physician1689645137
  3. Roger Kushner, D.O.Obstetrics Physician1962467621
  4. Sylvia Santos-Sio, M.D.Obstetrics & Gynecology Physician1154367977

Verify Ronald Gene Zack 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 RZ033941
    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

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85% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

24 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Ronald Zack24
  2. Specialty average165

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.

Ronald Gene Zack among 1,776 obstetrics & gynecology physician records in Michigan

Ronald Gene Zack, M.D. is one of 1,776 obstetrics & gynecology physician records with a practice address in Michigan. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 57% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 56% of these records are
  • Record last updated2012 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Michigan

There are 1,776 obstetrics & gynecology physician records in Michigan.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. William Anderson, D.O.Livonia, MI 481521629082870
  2. David Clarke, MDLivonia, MI 481521699779512
  3. Adam Cooper, MDLivonia, MI 481521811939762
  4. Abbey Crooks-Babu, MDLivonia, MI 481521598760183
  5. Christina Dimaggio, MDLivonia, MI 481521740284561
  6. Robert Dock, DOLivonia, MI 481521689645137
  7. Michael Gatt, MDLivonia, MI 481521568447050
  8. Richard Herman, DOLivonia, MI 481521346277290

Common questions

What is Ronald Gene Zack, M.D.'s NPI number?

Ronald Gene Zack, M.D.'s National Provider Identifier (NPI) is 1790729366, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ronald Gene Zack, M.D. located?

The NPPES record lists a practice address at 20276 Middlebelt RD, Livonia, MI, 48152. Phone: (248) 476-4900. Providers update this record themselves, so call before visiting.

How can I verify Ronald Gene Zack, M.D.'s license?

NPPES lists Michigan license number RZ033941, 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 Ronald Gene Zack, M.D. prescribe under Medicare Part D?

In 2024, Ronald Gene Zack, M.D. had 24 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.