Ruth Chambi Johnson, M.D.
Internal Medicine Physician · New York, NY
Ruth Chambi Johnson, M.D. is an internal medicine physician with a practice address in New York, New York, and NPI 1598968612, issued on Jun 6, 2007. Check the license (New York 244276, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ruth Chambi Johnson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 244276 NY
Self-reported in NPPES; status is on the state search - Practice location
- 425 Madison Ave, New York, NY 10017
- Phone
- (212) 644-9100
- Enumerated
- Jun 6, 2007
- Record last updated
- Apr 14, 2023
- Fax
- (212) 644-6116
- Medicare enrollment
- Enrolled (PECOS I20090105000047); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 425 Madison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ruth Chambi Johnson 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 244276Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
414 Medicare Part D claims for 47 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 26 claims were for opioids.
Most prescribed
- Levothyroxine Sodium36 claims
- Ozempic32 claims
- Np Thyroid27 claims
- Alprazolam19 claims
- Zolpidem Tartrate18 claims
- Olmesartan Medoxomil17 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: $1,517.96
56 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 2,434 in New York → All 12,067 in New York → Every provider in New York →
Other internal medicine physician records in New York
- Deborah Aanonsen, D.O.Staten Island, NY1952395717
- Nivedita Aanur, M.D.New York, NY1982833471
- Jay Aaron, MDGreat Neck, NY1245332956
- Ahmad AbadiPoughkeepsie, NY1780258517
- Jamsheed Abadi, MDBrooklyn, NY1477537496
- Antonieta Abarientos, MDNew Rochelle, NY1649285123
- Zurab Abayev, M.D.Brooklyn, NY1841283058
- Ehab Abaza, MDNew York, NY1114507555
- Vaidarshi Abbagoni, MDNew York, NY1871237495
- Muhammad AbbasRichmond Hill, NY1053996587
Common questions
What is Ruth Chambi Johnson, M.D.'s NPI number?
Ruth Chambi Johnson, M.D.'s National Provider Identifier (NPI) is 1598968612, issued on Jun 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Chambi Johnson, M.D. located?
The NPPES record lists a practice address at 425 Madison Ave, New York, NY, 10017. Phone: (212) 644-9100. Providers update this record themselves, so call before visiting.
How can I verify Ruth Chambi Johnson, M.D.'s license?
NPPES lists New York license number 244276, 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 Ruth Chambi Johnson, M.D. prescribe under Medicare Part D?
In 2024, Ruth Chambi Johnson, M.D. had 414 Medicare Part D claims for 47 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.