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DR. GRETCHEN ANN GIGNAC MD
NPI 1821288960
Internal Medicine - Medical Oncology in Boston, MA

Active since July 25, 2007PECOS EnrolledAccepts Medicare Assignment
830 HARRISON AVENUE, MOAKLEY, 3RD FLOOR, BOSTON, MA 02118(617) 638-6428(617) 638-5756 Get Directions Write a Review

NPPES record last updated: June 5, 2014. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Gretchen Ann Gignac Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GRETCHEN ANN GIGNAC MD (NPI 1821288960) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (232079) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2001).

NPPES Registry Identity

NPI1821288960
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameDR. GRETCHEN ANN GIGNACCredential: MD
Location Address830 HARRISON AVENUE, MOAKLEY, 3RD FLOORBoston, MA 02118-2905
Mailing Address720 Harrison Avenue, Dob 503Boston, MA 02118
Phone(617) 638-6428
Fax(617) 638-5756
Sole ProprietorNo
Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 2001
Enumeration DateJuly 25, 2007
Last NPPES UpdateJune 5, 2014
✔ NPI 1821288960 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 232079
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License 232079 (MA)
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 232079 (MA)
830 HARRISON AVENUE, Boston, MA 02118
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Other Identifiers 2

Medicare PIN000228001MA
Medicaid110077244AMA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gretchen Ann Gignac Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3779677968
PECOS Enrollment IDI20070919000312
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
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.
120 services75 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
93 services51 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
55 services15 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
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.
39 services19 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
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.
29 services23 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
24 services24 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARGARET BROWN AUD
Audiologist
830 HARRISON AVENUE, GROUND FLOOR SUITE 1400
BOSTON, MA 02118
Suffolk County (617) 638-8124
PETER C WEBER MD
Otolaryngology
830 HARRISON AVENUE, STE 1400
BOSTON, MA 02118
Suffolk County (617) 638-8124
DR. KEN S ZANER MD
Internal Medicine (Medical Oncology)
830 HARRISON AVENUE, MOAKLEY, 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428
NICOLE TRAN PA-C
Physician Assistant
830 HARRISON AVENUE, SUITE 1400
BOSTON, MA 02118
Suffolk County (617) 638-8124
MICHELLE T LONG M.D.
Internal Medicine (Gastroenterology)
830 HARRISON AVENUE, EVANS - GASTROENTEROLOGY
BOSTON, MA 02118
Suffolk County (617) 638-6525
SUSAN CATHERINE GRIEVER NP
Nurse Practitioner (Adult Health)
830 HARRISON AVENUE, SUITE 1400
BOSTON, MA 02118
Suffolk County (617) 638-8124
HEDY P SMITH M.D.
Internal Medicine (Hematology)
830 HARRISON AVENUE, MOAKLEY, 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428
DOROTHY A. WISDOM NP
Nurse Practitioner (Family)
830 HARRISON AVENUE, MOAKLEY, 3RD FLOOR
BOSTON, MA 02118
Suffolk County (617) 638-6428

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gretchen Gignac's NPI number?

The NPI number for Gretchen Gignac is 1821288960. It was assigned to this individual provider in the NPPES registry on July 25, 2007.

Where is Gretchen Gignac located?

Gretchen Gignac practices at 830 Harrison Avenue Moakley, 3rd Floor, Boston, MA 02118. The listed phone number is (617) 638-6428.

What is Gretchen Gignac's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Gretchen Gignac enrolled in Medicare?

Yes. Gretchen Gignac is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gretchen Gignac accept?

Health plans from Anthem Blue Cross and Blue Shield list Gretchen Gignac as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gretchen Gignac affiliated with any hospitals?

According to CMS data, Gretchen Gignac is affiliated with Boston Medical Center.

When was this NPI record last updated?

The NPPES record for Gretchen Gignac was last updated on June 5, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.