Dr. Connie Y. Chen , MD
Internal Medicine • Concord, MA
801 Main St Ste 8
Concord, MA 017423319
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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NPI assigned on June 7, 2006; this date does not establish years in practice.
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Published CMS data list 809 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:
- 99213 — Established patient outpatient office visit: 339 service units.
- 99214 — Established patient outpatient office visit: 184 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 173 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 8 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 5,653 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 — 564 prescription fills, including refills.
- Amlodipine Besylate — 346 prescription fills, including refills.
- Lisinopril — 304 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 105 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 Concord, MA (2024, 27 clinicians with data). Median for this group: 776. Middle half: 309 to 1,436.
More Medicare Part B services than 65% 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.
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 990 in 2020 to 809 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
801 Main St Ste 8
Concord, MA 017423319
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Emerson Practice Associates, 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
State University Of New York At Buffalo School Of Medicine
1998
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
295 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 $88,847 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 $71,231 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
13,277 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
$345,262 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: $227.62 across 10 records.
By nature of payment
- Food and Beverage: $227.62 across 10 records.
Reporting-company totals (3 largest of 6)
- Sanofi Pasteur Inc.: $67.49 across 2 records.
- Exact Sciences Corporation: $43.26 across 2 records.
- AstraZeneca Pharmaceuticals LP: $42.22 across 2 records.
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
28 years (graduated 1998)
CMS Doctors and Clinicians data list 1998 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, CMS release of October 2, 2026.
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.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
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, “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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Chen 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. Chen 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 Concord 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 Concord, MA (2024, 27 clinicians with data). Median for this group: 776. Middle half: 309 to 1,436.
More Medicare Part B services than 65% 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 higher Medicare-allowed amount than 65% of clinicians listed under Internal Medicine in Concord, MA (2024, 27 clinicians with data). Median for this group: $62,462. Middle half: $36,083 to $96,099.
A higher Medicare-allowed amount than 70% 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 higher Medicare payment amount than 65% of clinicians listed under Internal Medicine in Concord, MA (2024, 27 clinicians with data). Median for this group: $48,391. Middle half: $28,013 to $77,141.
A higher Medicare payment amount than 70% 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
More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Concord, MA (2024, 25 clinicians with data). Median for this group: 738. Middle half: 89 to 5,539.
More Part D prescriptions than 85% 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 higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Concord, MA (2024, 25 clinicians with data). Median for this group: $37,968. Middle half: $4,549 to $304,866.
A higher Part D drug cost than 75% 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.
44 active clinicians are listed under Internal Medicine with a practice address in Concord, MA (6,822 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Concord
27.3% of these 44 clinicians have the CMS telehealth indicator.
59.1% of these 44 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 18% from 990 in 2020 to 809 in 2024.
- 2020: 990
- 2021: 1,102
- 2022: 967
- 2023: 997
- 2024: 809
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $85,963 in 2020 and $88,847 in 2024.
- 2020: $85,963
- 2021: $104,587
- 2022: $103,998
- 2023: $109,404
- 2024: $88,847
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Paid by Medicare
Paid by Medicare varied from year to year: $66,261 in 2020 and $71,231 in 2024.
- 2020: $66,261
- 2021: $83,521
- 2022: $82,634
- 2023: $87,973
- 2024: $71,231
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 11% from 5,100 in 2020 to 5,653 in 2024.
- 2020: 5,100
- 2021: 4,551
- 2022: 2,465
- 2023: 5,352
- 2024: 5,653
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30-day fills
30-day fills increased 10% from 12,066 in 2020 to 13,277 in 2024.
- 2020: 12,066
- 2021: 10,974
- 2022: 5,726
- 2023: 12,136
- 2024: 13,277
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Part D drug cost
Part D drug cost increased 44% from $240,205 in 2020 to $345,262 in 2024.
- 2020: $240,205
- 2021: $197,333
- 2022: $89,021
- 2023: $341,948
- 2024: $345,262
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $35.69 in 2019 to $227.62 in 2025.
- 2019: $35.69
- 2023: $23.23
- 2024: $255.32
- 2025: $227.62
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), 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 · 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 $227.62.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
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FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE | General | $41.37 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
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FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE | General | $26.12 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $25.88 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $23.71 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $22.01 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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The Cologuard Plus Collection Kit | General | $21.25 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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BREZTRI | General | $18.51 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $18.01 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $15.40 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $15.36 |
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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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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339 | 202 | $329.00 | $98.90 |
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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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184 | 118 | $465.00 | $139.55 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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173 | 173 | $463.00 | $141.37 |
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G0008
Administration of influenza virus vaccine
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33 | 33 | $125.00 | $35.30 |
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90662
Influenza vaccine split virus, preservative free
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31 | 31 | $210.00 | $81.50 |
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93010
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
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22 | 22 | $29.00 | $8.44 |
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G0180
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
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15 | 14 | $200.00 | $58.97 |
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G0009
Administration of pneumococcal vaccine
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12 | 12 | $161.00 | $35.30 |
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 | 564 | 46,708 | $7,771.48 | 165 |
| Amlodipine Besylate | Amlodipine Besylate | 346 | 28,824 | $2,993.25 | 102 |
| Lisinopril | Lisinopril | 304 | 24,530 | $2,654.18 | 97 |
| Levothyroxine Sodium | Levothyroxine Sodium | 265 | 21,798 | $3,389.10 | 73 |
| Losartan Potassium | Losartan Potassium | 213 | 16,261 | $3,031.23 | 59 |
| Metoprolol Succinate | Metoprolol Succinate | 170 | 13,764 | $3,536.22 | 54 |
| Simvastatin | Simvastatin | 162 | 13,408 | $1,982.95 | 48 |
| Gabapentin | Gabapentin | 158 | 9,154 | $1,774.54 | 51 |
| Hydrochlorothiazide | Hydrochlorothiazide | 156 | 13,240 | $498.23 | 49 |
| Trazodone Hcl | Trazodone Hcl | 143 | 9,116 | $1,153.15 | 47 |
| Tamsulosin Hcl | Tamsulosin Hcl | 138 | 11,780 | $3,288.82 | 44 |
| Atenolol | Atenolol | 104 | 8,287 | $1,668.64 | 31 |
| Eliquis | Apixaban | 97 | 6,175 | $116,688.91 | 27 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 94 | 7,526 | $2,081.93 | 32 |
| Allopurinol | Allopurinol | 93 | 7,451 | $1,351.67 | 24 |
| Omeprazole | Omeprazole | 91 | 7,495 | $1,320.10 | 34 |
| Lorazepam | Lorazepam | 81 | 2,287 | $461.55 | 23 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 74 | 2,384 | $2,501.15 | 29 |
| Furosemide | Furosemide | 73 | 5,245 | $351.40 | 25 |
| Pravastatin Sodium | Pravastatin Sodium | 72 | 5,872 | $1,733.91 | 24 |
| Mirtazapine | Mirtazapine | 72 | 4,254 | $1,579.30 | 17 |
| Sertraline Hcl | Sertraline Hcl | 71 | 6,210 | $564.65 | 22 |
| Metformin Hcl | Metformin Hcl | 65 | 5,670 | $717.17 | 21 |
| Alendronate Sodium | Alendronate Sodium | 63 | 4,629 | $527.17 | 18 |
| Bupropion Xl | Bupropion Hcl | 56 | 3,960 | $1,268.24 | 16 |
(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
Self-certified to NPPES: 2026-08-06NUCC 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
I20070803000090
MA
8527073501
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
Emerson Practice Associates, Inc
133 Old Rd To 9 Acre Cor, Concord, MA 017424159
Phone: 9782873020
Emerson Practice Associates, Inc
133 Old Rd To Nine Acre Corner, Concord, MA 017424159
Emerson Practice Associates, Inc
200 Baker Ave, Concord, MA 017422125
Phone: 9782873321
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 801 MAIN ST STE 8, CONCORD, MA 017423319 (Tel: 9782129088)
Registered at 801 MAIN ST STE 8, CONCORD, MA 017423319 (Tel: 9782129088)
NPI status registered as active in NPPES database
Registered at 16 HAYDEN AVE, LEXINGTON, MA 024217929 (Tel: 7813727100)
Registered at 41 MALL RD, BURLINGTON, MA 018050001 (Tel: 7813727100)
Recorded as CONNIE CHEN, MD
Internal Medicine (license number reported to NPPES: MA 232150)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Concord
- Dr. Vineeta Joshi, MD
- Jeremy Garneau
- Dr. Bilal Saeed, MD
- Zemin Wang
- Dr. Marguerite Roach, MD
- Dr. Peter Hoenig, MD
Mailing Address
801 Main St Ste 8
Concord, MA 017423319
Phone: 9782129088