Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Sylvan Baca , MD, PhD

Internal Medicine โ€ข Boston, MA

Active NPI 1730560947 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

75 Francis St
Boston, MA 021156110

Call 6177325500 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

75 Francis St

Boston, MA 021156110

Telephone 6177325500
Organization at the Same NPPES Address or Phone
Brigham And Women's Hospital, Inc. Facility NPI 1972577799

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Dana-Farber Cancer Institute, Inc.. See the list

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Medical School

Harvard Medical School

Graduation Year

2015

Medicare patients

82 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $16,791 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $13,013 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

30-day fills

15 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$22,616 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $2,142.86 in 2022

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2022.

Guide: How to read an Open Payments record

Years since graduation

11 years (graduated 2015)

CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.

NPI first issued

2015

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Baca has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Baca as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Boston and Massachusetts

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Boston, MA (2024, 1,131 clinicians with data). Median for this group: 230. Middle half: 108 to 528.

Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: 526. Middle half: 199 to 1,077.

Medicare-allowed amount

A lower Medicare-allowed amount than 60% of clinicians listed under Internal Medicine in Boston, MA (2024, 1,131 clinicians with data). Median for this group: $23,703. Middle half: $10,686 to $49,338.

A lower Medicare-allowed amount than 75% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: $50,301. Middle half: $19,690 to $96,604.

Paid by Medicare

A lower Medicare payment amount than 60% of clinicians listed under Internal Medicine in Boston, MA (2024, 1,131 clinicians with data). Median for this group: $18,004. Middle half: $8,200 to $37,781.

A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,773 clinicians with data). Median for this group: $38,367. Middle half: $14,848 to $75,032.

Medicare Part D prescriptions

Fewer Part D prescriptions than 90% of clinicians listed under Internal Medicine in Boston, MA (2024, 1,041 clinicians with data). Median for this group: 335. Middle half: 67 to 1,457.

Fewer Part D prescriptions than 90% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,673 clinicians with data). Median for this group: 1,163. Middle half: 127 to 3,739.

Part D drug cost

A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in Boston, MA (2024, 1,041 clinicians with data). Median for this group: $54,780. Middle half: $2,611 to $209,606.

A lower Part D drug cost than 65% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,673 clinicians with data). Median for this group: $101,447. Middle half: $8,909 to $319,514.

2,326 active clinicians are listed under Internal Medicine with a practice address in Boston, MA (6,822 in Massachusetts).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Boston

25% of these 2,326 clinicians have the CMS telehealth indicator.

56.5% of these 2,326 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2022
Disclosure Year:

Program year 2022 (payments made January 1 โ€“ December 31, 2022): fewer than 11 records totaling $2,142.86.

Manufacturer Payment Nature Product Type Amount ($)
Sanofi and Genzyme US Companies
Grant
Cash or cash equivalent
โ€” General $2,142.86

Source: CMS Open Payments, program year 2022, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2021โ€“2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2022โ€“2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
55 26 $278.00 $82.48
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
33 20 $762.00 $151.42
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
28 28 $924.00 $190.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
19 11 $428.00 $101.99

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Abiraterone Acetate Abiraterone Acetate 15 450 $22,615.96 โ€”

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2021-08-27
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES MA 263896

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Massachusetts Board of Registration in Medicine.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - MEDICAL ONCOLOGY

Medicare Enrollment ID

I20200505002465

Enrollment State Jurisdiction

MA

PECOS Control ID

8729395124

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026

Dana-Farber Cancer Institute, Inc.

450 Brookline Ave, Boston, MA 022155418

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

32 listed
Dr. Arnold Alqueza , MD

Orthopaedic Surgery - Hand Surgery

NPI 1023144755

Doctor of Medicine (M.D.)

Dr. Jon Aster , MD PHD

Pathology - Anatomic Pathology

NPI 1023075702

MDPHD

Dr. Hebist Berhane , MD

Internal Medicine

NPI 1013327600

Doctor of Medicine (M.D.)

Dr. Matthew Carey , MD, MBA

Internal Medicine - Cardiovascular Disease

NPI 1013536143

Doctor of Medicine (M.D.), Master of Business Administration

Dr. Safia Chatur , MD

Internal Medicine - Cardiovascular Disease

NPI 1003426347

Doctor of Medicine (M.D.)

William Clippinger , PA-C

Physician Assistant

NPI 1013412238

Physician Assistant (Certified)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

7 Historical Events
๐Ÿ“
Updated Business Mailing Address August 27, 2021

Registered at 450 BROOKLINE AVE, BOSTON, MA 022155418 (Tel: 6176323466)

โœ…
NPI Profile Active June 12, 2015

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) June 12, 2015

Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177325500)

๐Ÿ“
Business Mailing Address (Initial Record) June 12, 2015

Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177325500)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) June 12, 2015

Recorded as SYLVAN BACA, MD, PHD

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) June 12, 2015

Internal Medicine (license number reported to NPPES: MA 263896)

๐ŸŸข
Initial NPI Registration & Enumeration June 12, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1730560947
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 12, 2015
Last Update: August 27, 2021
Sole Proprietor: No

Other Internal Medicine Providers in Boston

All Internal Medicine Providers in Boston

Mailing Address

450 Brookline Ave

Boston, MA 022155418

Phone: 6176323466

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.