Thyra Gutierrez-Sierra
Internal Medicine Physician · Worcester, MA
Thyra Gutierrez-Sierra is an internal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1982962916, issued on Apr 27, 2012. Check the license (Massachusetts 263892, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Thyra Gutierrez-Sierra
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 263892 MA
Self-reported in NPPES; status is on the state search - Practice location
- 18 Hammond St, Worcester, MA 01610
- Phone
- (774) 420-2311
- Enumerated
- Apr 27, 2012
- Record last updated
- Dec 5, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 18 Hammond St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Debra Martin, OTA/LOccupational Therapy Assistant1255678090
Verify Thyra Gutierrez-Sierra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 263892Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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: $847.77
25 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
Thyra Gutierrez-Sierra among 6,825 internal medicine physician records in Massachusetts
Thyra Gutierrez-Sierra 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 2012, is newer than 67% of them.
- NPI issued2012 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2016 · 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
- Matilde Castiel, M.D.Worcester, MA 016101871576785
- Tiffany Groover, MDWorcester, MA 016101891091310
- Angus Michaels, M.D.Worcester, MA 016101396805701
- Emily Min, MDWorcester, MA 016101770106973
- Anthony White, M.D.Worcester, MA 016101235254186
- Raul Endriga, M.D.Worcester, MA 016091467633016
- Walter Goljan, MDWorcester, MA 016091619942679
- James Hurowitz, MDWorcester, MA 016091063488567
Common questions
What is Thyra Gutierrez-Sierra's NPI number?
Thyra Gutierrez-Sierra's National Provider Identifier (NPI) is 1982962916, issued on Apr 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Thyra Gutierrez-Sierra located?
The NPPES record lists a practice address at 18 Hammond St, Worcester, MA, 01610. Phone: (774) 420-2311. Providers update this record themselves, so call before visiting.
How can I verify Thyra Gutierrez-Sierra's license?
NPPES lists Massachusetts license number 263892, 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 Thyra Gutierrez-Sierra prescribe under Medicare Part D?
In 2024, Thyra Gutierrez-Sierra had 11 Medicare Part D claims; 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.