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DR. VARVARA MAZINA MD
NPI 1902260409
Obstetrics & Gynecology - Gynecologic Oncology in Boston, MA

Active since April 11, 2016PECOS EnrolledAccepts Medicare Assignment
55 FRUIT ST # 520A, BOSTON, MA 02114(617) 726-2000 Get Directions Write a Review

NPPES record last updated: May 24, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 24, 2023, Jan 19, 2021 (2 updates tracked since 2021).

About Dr. Varvara Mazina Md NPPES

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

DR. VARVARA MAZINA MD (NPI 1902260409) is an individual gynecologic oncology provider in Boston, Massachusetts, licensed in Massachusetts (282529) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1902260409
Entity TypeIndividualFemale
Primary Taxonomy207VX0201X
Provider Legal NameDR. VARVARA MAZINACredential: MD
Location Address55 FRUIT ST # 520ABoston, MA 02114-2621
Mailing Address55 Fruit St # 520aBoston, MA 02114-2696 · (617) 726-2000
Phone(617) 726-2000
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2016
Enumeration DateApril 11, 2016
Last NPPES UpdateMay 24, 20232 updates tracked since enumeration
NPPES CertifiedMay 24, 2023
✔ NPI 1902260409 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · Gynecologic OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207VX0201X
License✔ Licensed in MA · 282529
Definition
An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
55 FRUIT ST # 520A, Boston, MA 02114
Open in Google Maps ↗

Secondary Practice Location 1

Location 1Univ Of Washington Dept Ofobgyn, 1959 NE Pacific St. BOX 356460Seattle, WA 98195-0001 · Phone (206) 598-5500 · Fax (206) 598-8722

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Varvara Mazina 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 ID5193016921
PECOS Enrollment IDI20230920002598, I20231214002512
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Varvara Mazina reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
Same address
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The General Hospital Corporation
Same address
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Foundation Medical Partners Inc
34 mi
Internal Medicine
8 PROSPECT ST
Nashua, NH 03060
  • Reassigned Medicare billing, New Hampshire enrollment
  • 283 clinicians in this Medicare group
NPI 1033162037 (603) 281-8585
Elliot Professional Services
46 mi
Internal Medicine
1070 HOLT AVE, UNIT 1, SUITE 2200
Manchester, NH 03109
  • Reassigned Medicare billing, New Hampshire enrollment
  • 446 clinicians in this Medicare group
NPI 1285627935 (603) 663-4900

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

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.
66 services53 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.
57 services37 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.
53 services43 patients
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.
50 services24 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.
40 services38 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.
23 services23 patients

Hospital Affiliations CMS Care Compare 5

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

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

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

Elliot Hospital

Acute Care Hospitals · Manchester, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300012
Location1 Elliot WayManchester, NH 03103 · Hillsborough County
Emergency services Birthing friendly

Southern Nh Medical Center

Acute Care Hospitals · Nashua, NH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number300020
Location8 Prospect StreetNashua, NH 03060 · Hillsborough 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
$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.

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 Varvara Mazina's NPI number?

The NPI number for Varvara Mazina is 1902260409. It was assigned to this individual provider in the NPPES registry on April 11, 2016.

Where is Varvara Mazina located?

Varvara Mazina practices at 55 Fruit St # 520A, Boston, MA 02114. The listed phone number is (617) 726-2000.

What is Varvara Mazina's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.

Is Varvara Mazina enrolled in Medicare?

Yes. Varvara Mazina 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.

Which organizations bill Medicare for Varvara Mazina's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Varvara Mazina reassigns Medicare benefits to 4 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Foundation Medical Partners Inc (Nashua, NH) and Elliot Professional Services (Manchester, NH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Varvara Mazina's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Varvara Mazina accept?

Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list Varvara Mazina 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 Varvara Mazina affiliated with any hospitals?

According to CMS data, Varvara Mazina is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Newton-Wellesley Hospital, Elliot Hospital and Southern Nh Medical Center.

When was this NPI record last updated?

The NPPES record for Varvara Mazina was last updated on May 24, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.