GREGORY T WILLIAMS MD
NPI 1043288848
Internal Medicine - Infectious Disease in Worcester, MA

NPI Status: Active since March 09, 2006

Contact Information

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

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  • Individual
  • Male
  • Internal Medicine
  • Infectious Disease
  • PECOS Enrolled

About GREGORY WILLIAMS

This page provides the complete NPI Profile along with additional information for Gregory Williams, an internist established in Worcester, Massachusetts with a medical specialization in Internal Medicine, focusing in infectious disease . The healthcare provider is registered in the NPI registry with number 1043288848 assigned on March 2006. The practitioner's primary taxonomy code is 207RI0200X with license number 79617 (MA). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1043288848
Provider Name
GREGORY T WILLIAMS MD
Gender
Male
Entity Type
Individual
Location Address
123 SUMMER STREET SUITE 220 S WORCESTER, MA 01608
Location Phone
(508) 368-3122
Location Fax
(508) 368-3121
Mailing Address
630 PLANTATION ST WORCESTER, MA 01605
Mailing Phone
(508) 368-3122
Mailing Fax
(508) 368-3121
Is Sole Proprietor?
No
Enumeration Date
03-09-2006
Last Update Date
03-04-2009
Code Navigator

An internist like Gregory Williams is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Infectious Disease

Taxonomy Code
207RI0200X
Type
Allopathic & Osteopathic Physicians
License No.
79617
License State
MA
Taxonomy Description
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

79617 (MA)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
042472266OTHER (01)PRIVATE HEALTHCARE SYSTEM
AA2844OTHER (01)HARVARD PILGRIM HEALTHCAR
J14908OTHER (01)BLUE SHIELD HMO BLUE
042472266OTHER (01)ONE HEALTH PLAN
26881OTHER (01)CHILDRENS MEDICAL SECURIT
5218590OTHER (01)CIGNA HEALTH PLAN
784106OTHER (01)MVP HEALTH CARE
042472266OTHER (01)HEALTHCARE VALUE MANAGEME
J14908OTHER (01)BLUE SHIELD IDEMNITY
J14908OTHER (01)BLUE CARE ELECT
1061518OTHER (01)FIRST HEALTH
9200061OTHER (01)EVERCARE
110147355MEDICARE ID-TYPE UNSPECIFIED (04)RAILROAD MEDICARE
26881OTHER (01)HEALTHY START
91119OTHER (01)FALLON COMMUNITY HEALTH P
J14908MEDICARE ID-TYPE UNSPECIFIED (04)MA 
3130711MEDICAID (05)MA 
5237703OTHER (01)AETNA US HEALTHCARE
E29912MEDICARE UPIN (02) 
J14908MEDICARE ID-TYPE UNSPECIFIED (04)MEDICARE B

Medicare Participation & PECOS Enrollment Status

Gregory Williams is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Durable Medical Equipment (DME) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: No

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): No

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 19 times for 13 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 16 times for 12 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 66 times for 42 patients

Follow-up hospital inpatient care per day, typically 25 minutes

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

This service was performed 120 times for 56 patients

Follow-up hospital inpatient care per day, typically 35 minutes

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

This service was performed 77 times for 44 patients

Initial hospital inpatient care per day, typically 50 minutes

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

This service was performed 30 times for 28 patients

Initial hospital inpatient care per day, typically 70 minutes

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

This service was performed 43 times for 42 patients

Insertion of needle into vein for collection of blood sample

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

This service was performed 61 times for 37 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 20 times for 20 patients

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 01608 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $134.47
  • Minimum New Patient Price $58.86
  • Maximum New Patient Price $177.36
  • Average New Patient Copayment $33.61
  • Minimum New Patient Copayment $14.71
  • Maximum New Patient Copayment $44.34

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $103.48
  • Minimum Established Patient Price $19.11
  • Maximum Established Patient Price $144.84
  • Average Established Patient Copayment $25.87
  • Minimum Established Patient Copayment $4.77
  • Maximum Established Patient Copayment $36.21

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1043288848, we treat the final digit (8) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
4
Doubled → 8
Pos 4
3
Unchanged
Pos 5
2
Doubled → 4
Pos 6
8
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
Check
8
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 4 → 8 2 → 4 8 → 16 → 7 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 8 + 3 + 4 + 8 + 1 + 6 + 8 + 8 + 24 = 72

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1043288848.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine
123 SUMMER STREET, SUITE 370 NORTH
WORCESTER, MA 01608
Orthopaedic Surgery
123 SUMMER STREET, SUITE 320
WORCESTER, MA 01608
Surgery
123 SUMMER STREET, SUITE 210
WORCESTER, MA 01608
Nurse Practitioner
123 SUMMER STREET
WORCESTER, MA 01608
Internal Medicine (Cardiovascular Disease)
123 SUMMER STREET
WORCESTER, MA 01608
Psychiatry & Neurology (Neurology)
123 SUMMER STREET
WORCESTER, MA 01608
Internal Medicine
123 SUMMER STREET, SUITE 380 NORTH FALLON CLINIC NEPHROLOGY
WORCESTER, MA 01608
Internal Medicine
123 SUMMER STREET
WORCESTOR, MA 01608
Internal Medicine (Pulmonary Disease)
123 SUMMER STREET, SUITE 390
WORCESTER, MA 01608
Internal Medicine (Pulmonary Disease)
123 SUMMER STREET, SUITE 390
WORCESTER, MA 01608
Internal Medicine (Pulmonary Disease)
123 SUMMER STREET, SUITE 390
WORCESTER, MA 01608
Anesthesiology
123 SUMMER STREET, SAINT VINCENT HOSPITAL ANESTHESIA DEPT
WORCESTER, MA 01608
Audiologist
123 SUMMER STREET
WORCESTER, MA 01608
Pediatrics (Pediatric Gastroenterology)
123 SUMMER STREET, SUITE 630
WORCESTER, MA 01608
Physician Assistant (Surgical)
123 SUMMER STREET
WORCESTER, MA 01608
Internal Medicine
123 SUMMER STREET
WORCESTER, MA 01608
Internal Medicine
123 SUMMER STREET
WORCESTER, MA 01608
Urology
123 SUMMER STREET, SUITE 210
WORCESTER, MA 01608
Nurse Anesthetist, Certified Registered
123 SUMMER STREET
WORCESTER, MA 01608
Internal Medicine
123 SUMMER STREET
WORCESTER, MA 01608

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1043288848, enumerated as an "individual" on March 09, 2006.

The provider is located at 123 SUMMER STREET SUITE 220 S WORCESTER, MA 01608 and the phone number is (508) 368-3122.

Internal Medicine with taxonomy code 207RI0200X and a focus in Infectious Disease.

The provider might be accepting Accepts: Medicare, Medicaid, Blue Cross Blue Shield, Cigna,. Please consult your insurance carrier or call the provider to verify.