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DR. STEVEN R FLIER M.D.
NPI 1013905751
Internal Medicine in Wellesley, MA

Active since October 06, 2005PECOS EnrolledAccepts Medicare Assignment
110 WORCESTER ST, SUITE 301, WELLESLEY, MA 02481(617) 731-0058(617) 731-0825 Get Directions Write a Review

NPPES record last updated: December 30, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Dec 30, 2025, Dec 22, 2025 (2 updates tracked since 2025).

About Dr. Steven R Flier M.d. NPPES

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

DR. STEVEN R FLIER M.D. (NPI 1013905751) is an individual internal medicine provider in Wellesley, Massachusetts, licensed in Massachusetts (40073) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1975).

NPPES Registry Identity

NPI1013905751
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. STEVEN R FLIERCredential: M.D.
Location Address110 WORCESTER ST, SUITE 301Wellesley, MA 02481
Mailing Address110 Worcester St, Suite 301Wellesley, MA 02481 · (617) 731-0058 · Fax (617) 731-0825
Phone(617) 731-0058
Fax(617) 731-0825
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1975
Enumeration DateOctober 6, 2005
Last NPPES UpdateDecember 30, 20252 updates tracked since enumeration
NPPES CertifiedDecember 30, 2025
✔ NPI 1013905751 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 40073
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X · License 40073 (MA)
110 WORCESTER ST, Wellesley, MA 02481
Open in Google Maps ↗

Other Identifiers 1

OtherFLC04819MA · Bcbs

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. Steven R Flier M.d. 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 ID8628049871
PECOS Enrollment IDI20050819000130
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 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.
251 services173 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.
197 services166 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
151 services151 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.
138 services91 patients
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677
The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.
116 services116 patients
Administration of pneumococcal vaccine G0009
The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.
116 services116 patients

Hospital Affiliations CMS Care Compare 5

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

Massachusetts Eye And Ear Infirmary -

Acute Care Hospitals · Boston, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number220075
Location243 Charles StreetBoston, MA 02114 · Suffolk County
Emergency services

Beth Israel Deaconess Medical Center

Acute Care Hospitals · Boston, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220086
Location330 Brookline AvenueBoston, MA 02215 · 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 02481 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
$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 3

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

JORDAN S BUSCH M.D.
Internal Medicine
110 WORCESTER ST, SUITE 301
WELLESLEY, MA 02481
Norfolk County (617) 731-0058
NANCY HUNTER CORLISS MD
Internal Medicine
110 WORCESTER ST, SUITE 301
WELLESLEY, MA 02481
Norfolk County (617) 731-0058
MARTHA C WU M.D.
Internal Medicine
110 WORCESTER ST, SUITE 301
WELLESLEY, MA 02481
Norfolk County (617) 731-0058

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 Steven Flier's NPI number?

The NPI number for Steven Flier is 1013905751. It was assigned to this individual provider in the NPPES registry on October 6, 2005.

Where is Steven Flier located?

Steven Flier practices at 110 Worcester St Suite 301, Wellesley, MA 02481. The listed phone number is (617) 731-0058.

What is Steven Flier's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Steven Flier enrolled in Medicare?

Yes. Steven Flier 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 Steven Flier accept?

Health plans from Anthem Blue Cross and Blue Shield list Steven Flier 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 Steven Flier affiliated with any hospitals?

According to CMS data, Steven Flier is affiliated with Massachusetts General Hospital, Massachusetts Eye And Ear Infirmary -, Beth Israel Deaconess Medical Center, Newton-Wellesley Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Steven Flier was last updated on December 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.