Dr. David A Epstein , MD
Internal Medicine • Somerville, MA
300 Broadway
Somerville, MA 021452935
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. David Epstein is listed in NPPES under Internal Medicine.
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NPI assigned on August 4, 2006; this date does not establish years in practice.
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Published CMS data list 253 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 139 service units.
- 99213 — Established patient outpatient office visit: 45 service units.
- 99442 — Telephone medical discussion with physician: 31 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 5,591 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium — 441 prescription fills, including refills.
- Amlodipine Besylate — 240 prescription fills, including refills.
- Lisinopril — 216 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 116 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Somerville, MA (2024, 25 clinicians with data). Median for this group: 253. Middle half: 89 to 1,040.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,795 clinicians with data). Median for this group: 524. Middle half: 200 to 1,073.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 503 in 2020 to 253 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
300 Broadway
Somerville, MA 021452935
CMS Doctors and Clinicians lists 1 group name: Cambridge Public Health Commission. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Tufts University School Of Medicine
1992
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
141 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $22,220 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 – by Provider and Service, 2024.
Paid by Medicare
About $13,972 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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 – by Provider and Service, 2024.
30-day fills
10,459 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
$737,675 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $262.63 across 2 records.
By nature of payment
- Food and Beverage: $262.63 across 2 records.
Reporting-company totals
- ASAHI INTECC USA, INC.: $240.88 across 1 record.
- Shockwave Medical, Inc: $21.75 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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.
NPI first issued
2006
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
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.
Enrolled in Medicare (PECOS)
Dr. Epstein 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.
Can order Medicare-covered services
CMS lists Dr. Epstein 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Somerville and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Internal Medicine in Somerville, MA (2024, 25 clinicians with data). Median for this group: 253. Middle half: 89 to 1,040.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,795 clinicians with data). Median for this group: 524. Middle half: 200 to 1,073.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Somerville, MA (2024, 25 clinicians with data). Median for this group: $24,663. Middle half: $8,888 to $60,423.
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,795 clinicians with data). Median for this group: $50,126. Middle half: $19,685 to $96,485.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Somerville, MA (2024, 25 clinicians with data). Median for this group: $19,184. Middle half: $7,081 to $50,675.
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,795 clinicians with data). Median for this group: $38,152. Middle half: $14,838 to $74,912.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Internal Medicine in Somerville, MA (2024, 27 clinicians with data). Median for this group: 1,366. Middle half: 485 to 2,813.
More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,672 clinicians with data). Median for this group: 1,174. Middle half: 129 to 3,740.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Somerville, MA (2024, 27 clinicians with data). Median for this group: $99,959. Middle half: $15,486 to $299,553.
A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Massachusetts (2024, 3,672 clinicians with data). Median for this group: $103,819. Middle half: $9,088 to $319,703.
36 active clinicians are listed under Internal Medicine with a practice address in Somerville, MA (6,830 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Somerville
41.7% of these 36 clinicians have the CMS telehealth indicator.
72.2% of these 36 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 50% from 503 in 2020 to 253 in 2024.
- 2020: 503
- 2021: 437
- 2022: 351
- 2023: 304
- 2024: 253
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Medicare-allowed amount
Medicare-allowed amount decreased 35% from $34,002 in 2020 to $22,220 in 2024.
- 2020: $34,002
- 2021: $37,070
- 2022: $24,914
- 2023: $22,056
- 2024: $22,220
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Paid by Medicare
Paid by Medicare decreased 40% from $23,279 in 2020 to $13,972 in 2024.
- 2020: $23,279
- 2021: $24,338
- 2022: $16,044
- 2023: $14,082
- 2024: $13,972
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 5,406 in 2020 and 5,591 in 2024.
- 2020: 5,406
- 2021: 5,398
- 2022: 5,519
- 2023: 5,336
- 2024: 5,591
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30-day fills
30-day fills stayed about the same: 9,617 in 2020 and 10,459 in 2024.
- 2020: 9,617
- 2021: 9,955
- 2022: 9,982
- 2023: 9,818
- 2024: 10,459
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Part D drug cost
Part D drug cost increased 40% from $528,585 in 2020 to $737,675 in 2024.
- 2020: $528,585
- 2021: $618,675
- 2022: $723,995
- 2023: $748,941
- 2024: $737,675
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2025 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $262.63.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ASAHI INTECC USA, INC. |
Food and Beverage
Cash or cash equivalent
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Asahi Peripheral Vascular Wires | General | $240.88 |
| Shockwave Medical, Inc |
Food and Beverage
In-kind items and services
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Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter | General | $21.75 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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 |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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139 | 96 | $239.53 | $83.63 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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45 | 41 | $174.22 | $65.69 |
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99442
Telephone medical discussion with physician, 11-20 minutes
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31 | 23 | $170.16 | $99.06 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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22 | 15 | $230.45 | $104.40 |
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99443
Telephone medical discussion with physician, 21-30 minutes
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16 | 15 | $220.00 | $141.96 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 441 | 30,611 | $4,932.30 | 114 |
| Amlodipine Besylate | Amlodipine Besylate | 240 | 15,871 | $2,352.24 | 61 |
| Lisinopril | Lisinopril | 216 | 14,869 | $1,862.70 | 55 |
| Omeprazole | Omeprazole | 206 | 12,278 | $3,887.49 | 54 |
| Metoprolol Succinate | Metoprolol Succinate | 187 | 11,850 | $2,794.91 | 43 |
| Metformin Hcl Er | Metformin Hcl | 156 | 10,264 | $2,378.17 | 41 |
| Simvastatin | Simvastatin | 138 | 8,202 | $1,837.91 | 28 |
| Eliquis | Apixaban | 126 | 5,362 | $104,136.51 | 21 |
| Gabapentin | Gabapentin | 122 | 5,489 | $1,766.48 | 27 |
| Hydrochlorothiazide | Hydrochlorothiazide | 119 | 8,894 | $689.87 | 38 |
| Tamsulosin Hcl | Tamsulosin Hcl | 111 | 7,055 | $2,127.42 | 30 |
| Metformin Hcl | Metformin Hcl | 107 | 7,824 | $1,199.22 | 29 |
| Trulicity | Dulaglutide | 104 | 3,304 | $108,682.71 | 16 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 102 | 3,712 | $3,351.51 | 30 |
| Jardiance | Empagliflozin | 97 | 5,655 | $105,454.33 | 30 |
| Losartan Potassium | Losartan Potassium | 85 | 6,167 | $885.18 | 24 |
| Furosemide | Furosemide | 80 | 3,889 | $317.72 | 17 |
| Oxycodone Hcl | Oxycodone Hcl | 78 | 1,202 | $1,585.26 | 12 |
| Levothyroxine Sodium | Levothyroxine Sodium | 77 | 5,640 | $1,038.64 | 20 |
| Fluoxetine Hcl | Fluoxetine Hcl | 75 | 4,103 | $551.89 | 16 |
| Allopurinol | Allopurinol | 68 | 4,700 | $789.17 | 18 |
| Metoprolol Tartrate | Metoprolol Tartrate | 63 | 3,498 | $472.84 | 11 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 62 | 1,443 | $1,585.99 | — |
| Fluticasone Propionate | Fluticasone Propionate | 60 | 3,318 | $1,208.16 | 18 |
| Incruse Ellipta | Umeclidinium Bromide | 60 | 2,220 | $24,844.57 | — |
(top 25 shown)
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
NUCC Taxonomy Code: 207R00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050902000074
MA
1254363971
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
Cambridge Public Health Commission
300 Broadway, Somerville, MA 021452935
Phone: 6172847000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated August 04, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Somerville
- Dr. Jude Koomson, MD
- Dr. Erica Childs, MD
- Dr. Kavita Ketwaroo, MD
- Dr. Donald Perlo, MD
- Dr. Anthony Addesa, MD
- Dr. Eleanor Hobbs, MD
Mailing Address
300 Broadway
Somerville, MA 021452935
Phone: 6172847000