Gerald J. Chase, M.D.
Internal Medicine Physician · Worcester, MA
Gerald J. Chase, M.D. is an internal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1720061468, issued on Nov 28, 2005. Check the license (Massachusetts 56185, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gerald J. Chase
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 56185 MA
Self-reported in NPPES; status is on the state search - Practice location
- 367 Plantation St, Worcester, MA 01605
- Phone
- (508) 334-1443
- Enumerated
- Nov 28, 2005
- Record last updated
- Jan 31, 2024
- Fax
- (508) 334-1448
- Medicaid ID
- 3018695 MA
- Medicare enrollment
- Enrolled (PECOS I20050405001045); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1978
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 367 Plantation St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lester Mietkiewicz, MDInternal Medicine Physician1285609479
Verify Gerald J. Chase in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 56185Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
526 Medicare Part D claims for 207 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium49 claims
- Losartan Potassium32 claims
- Levothyroxine Sodium23 claims
- Lisinopril20 claims
- Omeprazole18 claims
- Metformin Hcl17 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
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerald J. Chase among 6,825 internal medicine physician records in Massachusetts
Gerald J. Chase, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1978 · median 2004 among the 4,103 with a school on file
- Record last updated2024 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
448 internal medicine physician records list a practice address in Worcester
They are 448 of the 13,166 NPPES records with a practice address in Worcester, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Worcester → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maria Casal, M.D.Worcester, MA 016051609859503
- Paula Cullinane, M.D.Worcester, MA 016051952384950
- Michael Galica, M.D.Worcester, MA 016051972586733
- Maria Garcia, M.D.Worcester, MA 016051396726220
- Mary Hawthorne, M.D.Worcester, MA 016051013990787
- Gayatridevi Ika, M.D.Worcester, MA 016051124001102
- Jayanthi Kumar, M.D.Worcester, MA 016051528041423
- Christine Macginnis, D.O.Worcester, MA 016051952382772
Common questions
What is Gerald J. Chase, M.D.'s NPI number?
Gerald J. Chase, M.D.'s National Provider Identifier (NPI) is 1720061468, issued on Nov 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gerald J. Chase, M.D. located?
The NPPES record lists a practice address at 367 Plantation St, Worcester, MA, 01605. Phone: (508) 334-1443. Providers update this record themselves, so call before visiting.
How can I verify Gerald J. Chase, M.D.'s license?
NPPES lists Massachusetts license number 56185, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gerald J. Chase, M.D. prescribe under Medicare Part D?
In 2024, Gerald J. Chase, M.D. had 526 Medicare Part D claims for 207 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.