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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GAIL E SEMIGRAN MD
NPI 1801872205
Internal Medicine - Cardiovascular Disease in Boston, MA

Active since December 16, 2005PECOS Enrolled
25 NEW CHARDON ST, NC25-301, BOSTON, MA 02114(617) 726-1843 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Gail E Semigran Md NPPES

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

DR. GAIL E SEMIGRAN MD (NPI 1801872205) is an individual cardiovascular disease provider in Boston, Massachusetts, licensed in Massachusetts (73775) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Harvard Medical School (1988).

NPPES Registry Identity

NPI1801872205
Entity TypeIndividualFemale
Primary Taxonomy207RC0000X
Provider Legal NameDR. GAIL E SEMIGRANCredential: MD
Location Address25 NEW CHARDON ST, NC25-301Boston, MA 02114-4774
Mailing AddressPo Box 9142Charlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Phone(617) 726-1843
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 1988
Enumeration DateDecember 16, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1801872205 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in MA · 73775
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedInternal MedicineTaxonomy 207R00000X · License 73775 (MA)
25 NEW CHARDON ST, Boston, MA 02114
Open in Google Maps ↗

Other Identifiers 3

Medicaid3179028MA
Other724156MA · Tufts Health Plan
OtherJ31901MA · Bcbs Ma

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. Gail E Semigran 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 ID5193709780
PECOS Enrollment IDI20040614000122
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 7

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
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.
156 services48 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.
107 services77 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
96 services81 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
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.
35 services35 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.
29 services29 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
25 services25 patients

Hospital Affiliations CMS Care Compare 3

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

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
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 11

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

MAJOR LEAGUE NUTRITION
Dietitian, Registered
25 NEW CHARDON ST
BOSTON, MA 02114
Suffolk County (617) 582-9485
ALFRED L KRAFT DMD
Dentist (General Practice)
25 NEW CHARDON ST
BOSTON, MA 02114
Suffolk County (617) 227-4924
NICOLE CHENARD MS, RD, LDN
Dietitian, Registered
25 NEW CHARDON ST
BOSTON, MA 02114
Suffolk County (617) 582-9485
DR. SEKAR KATHIRESAN MD
Internal Medicine
25 NEW CHARDON ST, NC25-301
BOSTON, MA 02114
Suffolk County (617) 726-9292
KATHLEEN TRAYNOR RN MS
Registered Nurse (Cardiac Rehabilitation)
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Suffolk County (617) 726-8248
ALFRED L. KRAFT, D.M.D.
Dentist (General Practice)
25 NEW CHARDON ST
BOSTON, MA 02114
Suffolk County (617) 227-4924
NANCY MCCLEARY RN
Registered Nurse (Cardiac Rehabilitation)
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Suffolk County (617) 724-3078
CLARE LAMORTE RN,MPH
Registered Nurse
25 NEW CHARDON ST, SUITE 301
BOSTON, MA 02114
Suffolk County (617) 726-1843

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 Gail Semigran's NPI number?

The NPI number for Gail Semigran is 1801872205. It was assigned to this individual provider in the NPPES registry on December 16, 2005.

Where is Gail Semigran located?

Gail Semigran practices at 25 New Chardon St Nc25-301, Boston, MA 02114. The listed phone number is (617) 726-1843.

What is Gail Semigran's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Gail Semigran enrolled in Medicare?

Yes. Gail Semigran 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 Gail Semigran accept?

Health plans from Anthem Blue Cross and Blue Shield list Gail Semigran 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 Gail Semigran affiliated with any hospitals?

According to CMS data, Gail Semigran is affiliated with Massachusetts General Hospital, Newton-Wellesley Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Gail Semigran was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 days 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.