NPPES file of Aug 9, 2026

Janice Baker, M.D.

Family Medicine Physician · Chatham, NJ

Janice Baker, M.D. is a family medicine physician with a practice address in Chatham, New Jersey, and NPI 1841216181, issued on Jul 13, 2006. Check the license (New Jersey 25MA05034200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841216181
Name
Janice Baker
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
25MA05034200 NJ
Self-reported in NPPES; status is on the state search
Practice location
492 Main St, Chatham, NJ 07928
Phone
(973) 635-2432
Enumerated
Jul 13, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(973) 635-6169
Medicare enrollment
Enrolled (PECOS I20070329000011); accepts Medicare assignment
Medical or professional school
Chicago College Of Medicine And Surgery, 1982
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 2,770 in New Jersey → Look up another NPI →

Also registered at 492 Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amy Gruber, M.D.Family Medicine Physician1578588851
  2. Elbridge Holland, M.D.Family Medicine Physician1225089261
  3. Veronika Koldachenko, MSN, APRN, AGNP-CPrimary Care Nurse Practitioner1174365712
  4. John Nevins, DOFamily Medicine Physician1316987480
  5. Maria Ocasio, M.D.Family Medicine Physician1881844330
  6. Matthew Resciniti, D.O.Sports Medicine (Family Medicine) Physician1982862231

Verify Janice Baker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA05034200    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Jersey license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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64% fewer Medicare Part D claims than the average family medicine physician in 2024

1,289 Medicare Part D claims for 246 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 26 claims were for opioids.

  1. Janice Baker1,289
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium110 claims
  2. Amlodipine Besylate84 claims
  3. Rosuvastatin Calcium74 claims
  4. Levothyroxine Sodium70 claims
  5. Lisinopril46 claims
  6. Alprazolam41 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

  1. Practice Associates Medical GroupMorristown, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Janice Baker among 2,770 family medicine physician records in New Jersey

Janice Baker, M.D. is one of 2,770 family medicine physician records with a practice address in New Jersey. 82% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 55% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1982 · median 2006 among the 1,875 with a school on file
  • Record last updated2007 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 family medicine physician records list a practice address in Chatham

They are 8 of the 349 NPPES records with a practice address in Chatham, and 2,770 family medicine physician records in New Jersey.

All 2,770 in New Jersey → Every provider in Chatham → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Amy Gruber, M.D.Chatham, NJ 079281578588851
  2. Elbridge Holland, M.D.Chatham, NJ 079281225089261
  3. John Nevins, DOChatham, NJ 079281316987480
  4. Maria Ocasio, M.D.Chatham, NJ 079281881844330
  5. Mitalie Shah, MDChatham, NJ 079281487159554
  6. Joseph Tribuna, M.DChatham, NJ 079281215970447
  7. Mikhail Varshavski, D.O.Chatham, NJ 079281548680986
  8. Alan Gellerstein, M.D.Cedar Knolls, NJ 079271588695712

Common questions

What is Janice Baker, M.D.'s NPI number?

Janice Baker, M.D.'s National Provider Identifier (NPI) is 1841216181, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Janice Baker, M.D. located?

The NPPES record lists a practice address at 492 Main St, Chatham, NJ, 07928. Phone: (973) 635-2432. Providers update this record themselves, so call before visiting.

How can I verify Janice Baker, M.D.'s license?

NPPES lists New Jersey license number 25MA05034200, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Janice Baker, M.D. prescribe under Medicare Part D?

In 2024, Janice Baker, M.D. had 1,289 Medicare Part D claims for 246 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.