Dr. Chaim Poper , DO
Internal Medicine β’ Brooklyn, NY
74 Wallabout St
Brooklyn, NY 112497830
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 March 27, 2018; this date does not establish years in practice.
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Published CMS data list 2,066 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Metoprolol Succinate β 80 prescription fills, including refills.
- Atorvastatin Calcium β 79 prescription fills, including refills.
- Levothyroxine Sodium β 71 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 78 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Internal Medicine in Brooklyn, NY (2024, 907 clinicians with data). Median for this group: 1,648. Middle half: 168 to 5,937.
Close to the middle for Part D prescriptions among clinicians listed under Internal Medicine in New York (2024, 7,077 clinicians with data). Median for this group: 1,413. Middle half: 160 to 4,792.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 11 in 2019 to 2,066 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2019β2024.
Practice Location & Contact Primary Location
74 Wallabout St
Brooklyn, NY 112497830
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
2,560 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
$163,828 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $722.12 across 31 records.
By nature of payment
- Food and Beverage: $722.12 across 31 records.
Reporting-company totals (3 largest of 13)
- Otsuka America Pharmaceutical, Inc.: $162.67 across 11 records.
- Amgen Inc.: $150.00 across 1 record.
- Xeris Pharmaceuticals, Inc.: $79.36 across 4 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).
NPI first issued
2018
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Poper 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. Poper 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 Brooklyn and New York
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Brooklyn, NY (2024, 907 clinicians with data). Median for this group: 1,648. Middle half: 168 to 5,937.
Close to the middle for clinicians listed under Internal Medicine in New York (2024, 7,077 clinicians with data). Median for this group: 1,413. Middle half: 160 to 4,792.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Brooklyn, NY (2024, 907 clinicians with data). Median for this group: $162,092. Middle half: $12,062 to $726,208.
Close to the middle for clinicians listed under Internal Medicine in New York (2024, 7,077 clinicians with data). Median for this group: $125,591. Middle half: $9,716 to $480,352.
1,498 active clinicians are listed under Internal Medicine with a practice address in Brooklyn, NY (12,093 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Brooklyn
19.3% of these 1,498 clinicians have the CMS telehealth indicator.
57.6% of these 1,498 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 D prescriptions
Medicare Part D prescriptions went from 11 in 2019 to 2,066 in 2024.
- 2019: 11
- 2021: 25
- 2022: 1,100
- 2023: 1,462
- 2024: 2,066
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30-day fills
30-day fills went from 11 in 2019 to 2,560 in 2024.
- 2019: 11
- 2021: 29
- 2022: 1,443
- 2023: 1,980
- 2024: 2,560
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Part D drug cost
Part D drug cost went from $54 in 2019 to $163,828 in 2024.
- 2019: $54
- 2021: $413
- 2022: $147,503
- 2023: $195,451
- 2024: $163,828
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $258.61 in 2022 to $722.12 in 2025.
- 2022: $258.61
- 2023: $338.09
- 2024: $195.50
- 2025: $722.12
Sources: 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 Β· 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 β December 31, 2025): 31 records totaling $722.12.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
OTEZLA | General | $150.00 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
|
IBSRELA | General | $29.40 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
Cologuard Collection Kit | General | $29.18 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
VPRIV | General | $27.89 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
FARXIGA | General | $26.56 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $25.61 |
| Insulet Corporation |
Food and Beverage
Cash or cash equivalent
|
Omnipod | General | $24.12 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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REXULTI | General | $23.37 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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GVOKE HYPOPEN | General | $22.29 |
| Lundbeck LLC |
Food and Beverage
Cash or cash equivalent
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REXULTI | General | $22.04 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $21.38 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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ABILIFY ASIMTUFII | General | $21.32 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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ABILIFY ASIMTUFII | General | $21.32 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $21.28 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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RECORLEV | General | $20.34 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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RECORLEV | General | $19.97 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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FARXIGA | General | $18.96 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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ABILIFY ASIMTUFII | General | $18.55 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $18.16 |
| Almatica Pharma LLC |
Food and Beverage
In-kind items and services
|
LOREEV XR | General | $16.99 |
| Eisai Inc. |
Food and Beverage
In-kind items and services
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Leqembi | General | $16.98 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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GVOKE HYPOPEN | General | $16.76 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
Cologuard Collection Kit | General | $16.34 |
| Kowa Pharmaceuticals America, Inc. |
Food and Beverage
In-kind items and services
|
ZORYVE | General | $15.20 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
|
ABILIFY ASIMTUFII | General | $15.08 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Metoprolol Succinate | Metoprolol Succinate | 80 | 3,193 | $624.64 | 11 |
| Atorvastatin Calcium | Atorvastatin Calcium | 79 | 4,050 | $293.89 | 15 |
| Levothyroxine Sodium | Levothyroxine Sodium | 71 | 2,834 | $566.59 | β |
| Pantoprazole Sodium | Pantoprazole Sodium | 67 | 2,610 | $3,586.47 | 11 |
| Duloxetine Hcl | Duloxetine Hcl | 66 | 2,324 | $719.00 | β |
| Ketoconazole | Ketoconazole | 59 | 1,920 | $1,779.15 | 16 |
| Torsemide | Torsemide | 49 | 1,650 | $399.34 | β |
| Eliquis | Apixaban | 48 | 1,860 | $38,786.12 | β |
| Omeprazole | Omeprazole | 47 | 2,070 | $268.94 | β |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 47 | 1,994 | $229.79 | 11 |
| Azithromycin | Azithromycin | 43 | 515 | $274.02 | 20 |
| Furosemide | Furosemide | 42 | 1,316 | $58.90 | β |
| Quetiapine Fumarate | Quetiapine Fumarate | 40 | 1,200 | $135.47 | β |
| Escitalopram Oxalate | Escitalopram Oxalate | 39 | 1,710 | $275.51 | β |
| Famotidine | Famotidine | 39 | 1,890 | $262.83 | β |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 39 | 1,410 | $161.22 | β |
| Methenamine Hippurate | Methenamine Hippurate | 37 | 1,110 | $1,081.27 | β |
| Nystatin | Nystatin | 36 | 1,080 | $728.42 | β |
| Terconazole | Terconazole | 34 | 238 | $937.95 | β |
| Finasteride | Finasteride | 32 | 1,980 | $337.43 | β |
| Metformin Hcl Er | Metformin Hcl | 32 | 1,140 | $99.39 | β |
| Ammonium Lactate | Ammonium Lactate | 32 | 958 | $634.96 | β |
| Metformin Hcl | Metformin Hcl | 31 | 930 | $188.39 | β |
| Levetiracetam | Levetiracetam | 31 | 1,050 | $515.32 | β |
| Aripiprazole | Aripiprazole | 29 | 870 | $364.42 | β |
(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: 2025-10-01NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20210730000495
NY
3779820030
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
PHYSICIANASSISTANT
Dentist
Doctor of Dental Surgery
Pediatrics
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Nurse Practitioner
Pediatrics
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 74 WALLABOUT ST, BROOKLYN, NY 112497830 (Tel: 7182604600)
Registered at 74 WALLABOUT ST, BROOKLYN, NY 112497830 (Tel: 7182604600)
Internal Medicine (license number reported to NPPES: NY 309311)
Registered at 49 FOREST RD, MONROE, NY 109502923 (Tel: 8457823242)
Registered at 49 FOREST RD, MONROE, NY 109502923 (Tel: 8457823242)
NPI status registered as active in NPPES database
Registered at 475 SEAVIEW AVE, STATEN ISLAND, NY 103053436 (Tel: 7182268855)
Registered at 475 SEAVIEW AVE, STATEN ISLAND, NY 103053436 (Tel: 7182268855)
Recorded as CHAIM POPER, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Brooklyn
- Dr. Yuanli Xie, MD
- Dr. Albert Izmaylov, MD
- Sheela Mehra
- Dr. Anna Marinovich, MD
- Santosh Sharma
- Dr. Henry Chen, MD
Mailing Address
74 Wallabout St
Brooklyn, NY 112497830
Phone: 7182604600