Dr. John Thomas Maher , MD
Specialist • Brooklyn, NY
110 4th Ave # Levelc
Brooklyn, NY 112172787
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 November 2, 2006; this date does not establish years in practice.
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Published CMS data list 79 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:
- G0101 — Cervical or vaginal cancer screening; pelvic and clinical breast examination: 30 service units.
- Q0091 — Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory: 29 service units.
- 99213 — Established patient outpatient office visit: 20 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 the full table · Guide: How to read Medicare Part B data
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Published CMS data list 15 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:
- Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) — 15 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 the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Specialist in Brooklyn, NY (2024, 95 clinicians with data). Median for this group: 918. Middle half: 217 to 3,256.
Fewer Medicare Part B services than 90% of clinicians listed under Specialist in New York (2024, 823 clinicians with data). Median for this group: 1,255. Middle half: 386 to 3,262.
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 154 in 2020 to 79 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
110 4th Ave # Levelc
Brooklyn, NY 112172787
CMS Doctors and Clinicians lists 1 group name: Kings Physician Services Pc. 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
Rutgers New Jersey Medical School
1989
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
47 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 $4,911 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 $4,407 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
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
$196 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $96.77 in 2023
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.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
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 2023.
Years since graduation
37 years (graduated 1989)
CMS Doctors and Clinicians data list 1989 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.
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, CMS release of October 2, 2026; Medicare.gov, “Does your provider accept Medicare as full payment?”
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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Maher 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. Maher 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 B services
Fewer Medicare Part B services than 90% of clinicians listed under Specialist in Brooklyn, NY (2024, 95 clinicians with data). Median for this group: 918. Middle half: 217 to 3,256.
Fewer Medicare Part B services than 90% of clinicians listed under Specialist in New York (2024, 823 clinicians with data). Median for this group: 1,255. Middle half: 386 to 3,262.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Specialist in Brooklyn, NY (2024, 95 clinicians with data). Median for this group: $83,741. Middle half: $26,187 to $231,257.
A lower Medicare-allowed amount than 90% of clinicians listed under Specialist in New York (2024, 823 clinicians with data). Median for this group: $91,756. Middle half: $32,981 to $225,043.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Specialist in Brooklyn, NY (2024, 95 clinicians with data). Median for this group: $65,183. Middle half: $19,404 to $176,853.
A lower Medicare payment amount than 90% of clinicians listed under Specialist in New York (2024, 823 clinicians with data). Median for this group: $70,770. Middle half: $25,276 to $173,457.
Medicare Part D prescriptions
Fewer Part D prescriptions than 95% of clinicians listed under Specialist in Brooklyn, NY (2024, 75 clinicians with data). Median for this group: 553. Middle half: 118 to 2,055.
Fewer Part D prescriptions than 90% of clinicians listed under Specialist in New York (2024, 700 clinicians with data). Median for this group: 518. Middle half: 92 to 1,504.
Part D drug cost
A lower Part D drug cost than 95% of clinicians listed under Specialist in Brooklyn, NY (2024, 75 clinicians with data). Median for this group: $39,252. Middle half: $2,645 to $226,092.
A lower Part D drug cost than 90% of clinicians listed under Specialist in New York (2024, 700 clinicians with data). Median for this group: $36,297. Middle half: $2,241 to $274,072.
5,825 active clinicians are listed under Specialist with a practice address in Brooklyn, NY (22,933 in New York).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Brooklyn
0.4% of these 5,825 clinicians have the CMS telehealth indicator.
1.5% of these 5,825 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 49% from 154 in 2020 to 79 in 2024.
- 2020: 154
- 2021: 195
- 2022: 61
- 2023: 113
- 2024: 79
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Medicare-allowed amount
Medicare-allowed amount decreased 32% from $7,213 in 2020 to $4,911 in 2024.
- 2020: $7,213
- 2021: $10,941
- 2022: $4,056
- 2023: $6,548
- 2024: $4,911
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Paid by Medicare
Paid by Medicare decreased 27% from $6,066 in 2020 to $4,407 in 2024.
- 2020: $6,066
- 2021: $9,442
- 2022: $3,299
- 2023: $6,014
- 2024: $4,407
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 57% from 35 in 2019 to 15 in 2024.
- 2019: 35
- 2020: 31
- 2021: 39
- 2023: 27
- 2024: 15
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30-day fills
30-day fills decreased 59% from 37 in 2019 to 15 in 2024.
- 2019: 37
- 2020: 36
- 2021: 39
- 2023: 27
- 2024: 15
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Part D drug cost
Part D drug cost decreased 94% from $3,394 in 2019 to $196 in 2024.
- 2019: $3,394
- 2020: $1,157
- 2021: $1,002
- 2023: $481
- 2024: $196
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2023 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), 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 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $96.77.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Myriad Women's Health, Inc. |
Food and Beverage
In-kind items and services
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MYRISK | General | $96.77 |
Source: CMS Open Payments, program year 2023, 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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G0101
Cervical or vaginal cancer screening; pelvic and clinical breast examination
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30 | 30 | $75.00 | $45.63 |
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Q0091
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory
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29 | 29 | $75.00 | $50.67 |
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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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20 | 17 | $150.00 | $103.63 |
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 |
|---|---|---|---|---|---|
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 15 | 150 | $196.19 | 12 |
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: 2023-10-03NUCC Taxonomy Code: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
NUCC Taxonomy Code: 207V00000X
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OBSTETRICS/GYNECOLOGY
I20100225000252
NY
1759425960
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
Kings Physician Services Pc
506 6th St, Brooklyn, NY 112153609
Phone: 7187803000
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 110 4TH AVE # LEVELC, BROOKLYN, NY 112172787 (Tel: 7122384535)
Registered at 110 4TH AVE # LEVELC, BROOKLYN, NY 112172787 (Tel: 7188525810)
Obstetrics & Gynecology (license number reported to NPPES: NY 184820)
NPI status registered as active in NPPES database
Registered at 421 78TH ST, BROOKLYN, NY 112093403 (Tel: 7122384535)
Registered at 508 OCEAN TERRACE, STATEN ISLAND, NY 10301 (Tel: 7189810120)
Recorded as JOHN MAHER, M.D.
Specialist (license number reported to NPPES: NY 184820)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Specialists in Brooklyn
- Dr. Gregory Shifrin, MD
- Dr. Swaminathan Giridharan, MD, FACP, FACE, MBBS
- Dr. Rose Antilus, MD
- Dr. Jose Orsini, MD
- Dr. Eddy Vincent, MD
- Dr. Joel Zdanowitz, MD
Mailing Address
110 4th Ave # Levelc
Brooklyn, NY 112172787
Phone: 7188525810