John Syphax, MD
Addiction Psychiatry Physician · Washington, DC
John Syphax, MD is an addiction psychiatry physician with a practice address in Washington, District of Columbia, and NPI 1982894481, issued on Jul 31, 2007. Check the license (District of Columbia MD25407, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Syphax
- Credential
- MD
- Primary taxonomy
- Addiction Psychiatry Physician 2084P0802X
- License number
- MD25407 DC
Self-reported in NPPES; status is on the state search - Practice location
- 1330 New Hampshire Ave NW, Washington, DC 20036
- Phone
- (202) 223-9630
- Enumerated
- Jul 31, 2007
- Record last updated
- Jul 31, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
6 nearest addiction psychiatry physician records → All 7 in District of Columbia → Look up another NPI →
Also registered at 1330 New Hampshire Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arlene Amidon, PHDClinical Psychologist1548489198
- Leila Bremer, PSY.D.Clinical Psychologist1003035791
- Rula Garside, PH.D.Clinical Psychologist1598007338
- Bruce Hill, M.D.Psychiatry Physician1285745166
- Rusong Li, L.AC.Acupuncturist1841577343
- Charlotte Martin, L.AC.Acupuncturist1841667151
Verify John Syphax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD25407Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average addiction psychiatry physician in 2024
143 Medicare Part D claims for 18 beneficiaries, against an average of 716 among the 421 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Quetiapine Fumarate36 claims
- Haloperidol22 claims
- Trazodone Hcl15 claims
- Vraylar12 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: $62.27
3 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 170 providers of this specialty with any payment received $1,785.85 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.
Addiction Psychiatry Physician providers in District of Columbia
There are 7 addiction psychiatry physician records in District of Columbia.
All 7 in District of Columbia → Every provider in Washington → Addiction Psychiatry Physician nationwide →
The 6 addiction psychiatry physician records with the nearest ZIP codes
- Lisa Eitches, MDWashington, DC 200371477173326
- William Lawson, MDWashington, DC 200601750499406
- Robert Mickey, MDWashington, DC 200601508974239
- Richard Schottenfeld, M.D.Washington, DC 200601760670178
- Ashwin Jacob Mathai, M.D.Washington, DC 200021467898817
- Sally Satel, MDWashington, DC 200021558509554
Common questions
What is John Syphax, MD's NPI number?
John Syphax, MD's National Provider Identifier (NPI) is 1982894481, issued on Jul 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Syphax, MD located?
The NPPES record lists a practice address at 1330 New Hampshire Ave NW, Washington, DC, 20036. Phone: (202) 223-9630. Providers update this record themselves, so call before visiting.
How can I verify John Syphax, MD's license?
NPPES lists District of Columbia license number MD25407, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Syphax, MD prescribe under Medicare Part D?
In 2024, John Syphax, MD had 143 Medicare Part D claims for 18 beneficiaries; the average among addiction psychiatry physician prescribers was 716. 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.