William L. Guy, PH.D., M.D.
Psychiatry Physician · Southfield, MI
William L. Guy, PH.D., M.D. is a psychiatry physician with a practice address in Southfield, Michigan, and NPI 1295748101, issued on Aug 14, 2006. Check the license (Michigan 4301063551, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William L. Guy
- Credential
- PH.D., M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 4301063551 MI
Self-reported in NPPES; status is on the state search - Practice location
- 22170 W 9 Mile RD, Southfield, MI 48034
- Phone
- (313) 319-8429
- Enumerated
- Aug 14, 2006
- Record last updated
- Sep 10, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040506000688); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,729 in Michigan → Look up another NPI →
Also registered at 22170 W 9 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Surjeet Bagga, MDPsychiatry Physician1982794699
- Geetha Mohan, MDPsychiatry Physician1740376755
Verify William L. Guy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301063551Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average psychiatry physician in 2024
1,494 Medicare Part D claims for 100 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Quetiapine Fumarate120 claims
- Gabapentin94 claims
- Bupropion Xl73 claims
- Lamotrigine57 claims
- Alprazolam56 claims
- Clonazepam54 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: $133,898.04
211 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 13,693 providers of this specialty with any payment received $4,954.93 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
- Optum Behavioral Care OF Colorado PCMilford, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William L. Guy among 1,729 psychiatry physician records in Michigan
William L. Guy, PH.D., M.D. is one of 1,729 psychiatry physician records with a practice address in Michigan. 69% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 63% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated1994 · median 2005 among the 828 with a school on file
- Record last updated2007 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Michigan
There are 1,729 psychiatry physician records in Michigan.
All 1,729 in Michigan → Every provider in Southfield → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Tariq Abbasi, MDSouthfield, MI 480341326133208
- Sam Ajluni, M.D.Southfield, MI 480341700888179
- Surjeet Bagga, MDSouthfield, MI 480341982794699
- Michael Freedman, MDSouthfield, MI 480341114062262
- David Gendernalik, M.D.Southfield, MI 480341598041949
- Lauren Henderson, DOSouthfield, MI 480341558859090
- Don Jones, M.D.Southfield, MI 480341770786683
- Barbara Kilian, MDSouthfield, MI 480341376558809
Common questions
What is William L. Guy, PH.D., M.D.'s NPI number?
William L. Guy, PH.D., M.D.'s National Provider Identifier (NPI) is 1295748101, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William L. Guy, PH.D., M.D. located?
The NPPES record lists a practice address at 22170 W 9 Mile RD, Southfield, MI, 48034. Phone: (313) 319-8429. Providers update this record themselves, so call before visiting.
How can I verify William L. Guy, PH.D., M.D.'s license?
NPPES lists Michigan license number 4301063551, 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 William L. Guy, PH.D., M.D. prescribe under Medicare Part D?
In 2024, William L. Guy, PH.D., M.D. had 1,494 Medicare Part D claims for 100 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.