Nathaniel Leon Ray, M.D.
Psychiatry Physician · Milwaukee, WI
Nathaniel Leon Ray, M.D. is a psychiatry physician with a practice address in Milwaukee, Wisconsin, and NPI 1275776270, issued on Apr 7, 2009. Check the license (Wisconsin 55932-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Leon Ray
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 55932-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 8701 W Watertown Plank RD, Milwaukee, WI 53226
- Phone
- (414) 955-8998
- Enumerated
- Apr 7, 2009
- Record last updated
- Jul 19, 2026
- Medicare enrollment
- Enrolled (PECOS I20130812000319); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 929 in Wisconsin → Look up another NPI →
Also registered at 8701 W Watertown Plank RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Suhita AlluriStudent in an Organized Health Care Education/Training Program1417453341
- Naif Alsaikhan, MDVascular & Interventional Radiology Physician1255743860
- Eric Anderson, MDStudent in an Organized Health Care Education/Training Program1518595024
- Warren Anderson, MSPPerfusionist1194350991
Verify Nathaniel Leon Ray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 55932-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average psychiatry physician in 2024
93 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Desvenlafaxine Succinate Er26 claims
- Aripiprazole13 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.
Bills Medicare through one group practice
- Lighthouse Clinic LLCMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Leon Ray among 929 psychiatry physician records in Wisconsin
Nathaniel Leon Ray, M.D. is one of 929 psychiatry physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated2009 · median 2005 among the 439 with a school on file
- Record last updated2026 · 52% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Wisconsin
There are 929 psychiatry physician records in Wisconsin.
All 929 in Wisconsin → Every provider in Milwaukee → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Mary Alvarez, MDMilwaukee, WI 532261669424230
- Jon Berlin, MDMilwaukee, WI 532261174574529
- David Bresnahan, MDMilwaukee, WI 532261376595884
- Carlyle Chan, MDMilwaukee, WI 532261528019924
- Nancy Check, MDMilwaukee, WI 532261336190719
- John Lamberton, MDMilwaukee, WI 532261871544627
- Joseph Layde, MDMilwaukee, WI 532261265483770
- Hillard Moffic, MDMilwaukee, WI 532261932150687
Common questions
What is Nathaniel Leon Ray, M.D.'s NPI number?
Nathaniel Leon Ray, M.D.'s National Provider Identifier (NPI) is 1275776270, issued on Apr 7, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Leon Ray, M.D. located?
The NPPES record lists a practice address at 8701 W Watertown Plank RD, Milwaukee, WI, 53226. Phone: (414) 955-8998. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Leon Ray, M.D.'s license?
NPPES lists Wisconsin license number 55932-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathaniel Leon Ray, M.D. prescribe under Medicare Part D?
In 2024, Nathaniel Leon Ray, M.D. had 93 Medicare Part D claims; 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.