GREGORY T WILLIAMS MD NPI 1043288848

NPI Information

  • NPI: 1043288848
  • Provider Name: GREGORY T WILLIAMS, MD
  • Classification: Internal Medicine - 207RI0200X
  • Specialization: Infectious Disease
  • Entity Type: Individual
  • PECOS Registration: Yes
  • Address: 123 SUMMER STREET
    SUITE 220 S
    WORCESTER, MA
    ZIP 01608
  • Phone: (508) 368-3122

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NPI Details

Gregory T Williams, MD is an infectious disease internal medicine in Worcester, MA. The provider is an internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine. Gregory T Williams, MD NPI is 1043288848. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

123 SUMMER STREET
SUITE 220 S
WORCESTER, MA
ZIP 01608
Phone: (508) 368-3122
Fax: (508) 368-3121

The NPI 1043288848 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Power Mobility Devices.

The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.

  • Follow-up hospital inpatient care per day, typically 25 minutes (HCPCS:99232)
  • Follow-up hospital inpatient care per day, typically 35 minutes (HCPCS:99233)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)
  • Insertion of needle into vein for collection of blood sample (HCPCS:36415)
  • Initial hospital inpatient care per day, typically 70 minutes (HCPCS:99223)
  • Initial hospital inpatient care per day, typically 50 minutes (HCPCS:99222)
  • New patient office or other outpatient visit, 45-59 minutes (HCPCS:99204)
  • Established patient office or other outpatient visit, 20-29 minutes (HCPCS:99213)
  • Established patient office or other outpatient visit, 30-39 minutes (HCPCS:99214)

The enumeration date for this NPI number is 3/9/2006 and was last updated on 3/4/2009.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207R00000XInternal Medicine79617MASSACHUSETTSNo
2207RI0200XInternal MedicineInfectious Disease79617MASSACHUSETTSYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1042472266OTHERPRIVATE HEALTHCARE SYSTEM
2AA2844OTHERHARVARD PILGRIM HEALTHCAR
3J14908OTHERBLUE SHIELD HMO BLUE
4042472266OTHERONE HEALTH PLAN
526881OTHERCHILDRENS MEDICAL SECURIT
65218590OTHERCIGNA HEALTH PLAN
7784106OTHERMVP HEALTH CARE
8042472266OTHERHEALTHCARE VALUE MANAGEME
9J14908OTHERBLUE SHIELD IDEMNITY
10J14908OTHERBLUE CARE ELECT
111061518OTHERFIRST HEALTH
129200061OTHEREVERCARE
13110147355MEDICARE ID-TYPE UNSPECIFIEDRAILROAD MEDICARE
1426881OTHERHEALTHY START
1591119OTHERFALLON COMMUNITY HEALTH P
16J14908MEDICARE ID-TYPE UNSPECIFIEDMASSACHUSETTS
173130711MEDICAIDMASSACHUSETTS
185237703OTHERAETNA US HEALTHCARE
19E29912MEDICARE UPIN
20J14908MEDICARE ID-TYPE UNSPECIFIEDMEDICARE B

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

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