William Young Guo, MD
MOHS-Micrographic Surgery Physician · Stony Brook, NY
William Young Guo, MD is a mohs-micrographic surgery physician with a practice address in Stony Brook, New York, and NPI 1942888482, issued on Mar 29, 2021. Check the license (New York 343125, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William Young Guo
- Credential
- MD
- Primary taxonomy
- MOHS-Micrographic Surgery Physician 207ND0101X
- License number
- 343125 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1320 Stony Brook RD Bldg F, Stony Brook, NY 11790
- Phone
- (631) 444-4200
- Enumerated
- Mar 29, 2021
- Record last updated
- Aug 3, 2026
- Entity
- Type 1 · individual
8 nearest mohs-micrographic surgery physician records → All 82 in New York → Look up another NPI →
Also registered at 1320 Stony Brook RD Bldg F
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly LuStudent in an Organized Health Care Education/Training Program1780487702
- Rachel Manci, MDDermatology Physician1770164212
Verify William Young Guo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 343125Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average mohs-micrographic surgery physician in 2024
84 Medicare Part D claims for 56 beneficiaries, against an average of 570 among the 1,396 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Triamcinolone Acetonide13 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.
William Young Guo among 82 mohs-micrographic surgery physician records in New York
William Young Guo, MD is one of 82 mohs-micrographic surgery physician records with a practice address in New York. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 99% of them.
- NPI issued2021 · 99% of these records are older, 0% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileNo · 91% of these records are
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0101X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
MOHS-Micrographic Surgery Physician providers in New York
There are 82 mohs-micrographic surgery physician records in New York.
All 82 in New York → Every provider in Stony Brook → MOHS-Micrographic Surgery Physician nationwide →
The 8 mohs-micrographic surgery physician records with the nearest ZIP codes
- Evan Jones, M.D.Stony Brook, NY 117901104865831
- Darren Mollick, MDSyosset, NY 117911225012552
- Chih-Shan Chen, MDHauppauge, NY 117881891766671
- Daniel Siegel, M.D.Smithtown, NY 117871679532907
- Anthony Wong, M.D.Smithtown, NY 117871821057977
- Jordan Slutsky, MDStony Brook, NY 117941336309848
- Kavita Mariwalla, M.DWest Islip, NY 117951962674184
- Dana Baigrie, D.O.Hicksville, NY 118011922494095
Common questions
What is William Young Guo, MD's NPI number?
William Young Guo, MD's National Provider Identifier (NPI) is 1942888482, issued on Mar 29, 2021. An NPI identifies a provider in billing; it is not a license.
Where is William Young Guo, MD located?
The NPPES record lists a practice address at 1320 Stony Brook RD Bldg F, Stony Brook, NY, 11790. Phone: (631) 444-4200. Providers update this record themselves, so call before visiting.
How can I verify William Young Guo, MD's license?
NPPES lists New York license number 343125, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Young Guo, MD prescribe under Medicare Part D?
In 2024, William Young Guo, MD had 84 Medicare Part D claims for 56 beneficiaries; the average among mohs-micrographic surgery physician prescribers was 570. 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.