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2026 NPPES data Hematology (Internal Medicine) Physician NPI 1730321662 M.D.
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Tracy Proverbs-Singh, M.D.

Hematology (Internal Medicine) Physician in Hackensack, New Jersey.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,436 in Hematology (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
655
Medicare Part D claims · 134 beneficiaries · Hematology (Internal Medicine) Physician avg: 693
MIPS score
83.5/100
▲ 0 pts above national avg 83.1 · Above neutral
Industry payments
$1.0K
52 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Tracy Proverbs-Singh, M.D. reported a CMS MIPS final score of 83.5/100 - above the 83.1 national average - and filed 655 Medicare Part D claims in 2023.

83.5/100
MIPS score · +0 vs avg
655
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Tracy Proverbs-Singh, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

84 42nd percentile higher than 42% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Tracy Proverbs-Singh, M.D. sits

This provider among hematology (internal medicine) physician peers

Across the 570 hematology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Tracy Proverbs-Singh, M.D. writes more Part D claims than 55% of them and scores higher on MIPS quality than 48% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 58Tracy Proverbs-Singh, M.D.-Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 48
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one hematology (internal medicine) physician peer from a representative sample of 60; the gold marker is Tracy Proverbs-Singh, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Tracy Proverbs-Singh, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Tracy Proverbs-Singh, M.D.?

Near national average

NPI registry status

Active

Issued 03/24/2009

NPI 1730321662

Primary specialty

Hematology (Internal Medicine) Physician

Niche

1,436 US NPIs in this specialty

Medicare Part D claims

655 5% vs specialty avg

2023 prescription claims

Specialty avg: 693

MIPS final score

83.5/100 0.4 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in New Jersey

How Hematology (Internal Medicine) Physician compares to other specialties among New Jersey providers

New Jersey providers
Mental Health Counselor - 6.2%Mental Health Counselor6.2%Physical Therapist - 5.9%Physical Therapist5.9%Clinical Social Worker - 5.5%Clinical Social Worker5.5%Student in an Organized Health Care Education/Training Program - 5.4%Student in an Organized Health Care Education/Training Program5.4%Pharmacist - 5%Pharmacist5%Internal Medicine Physician - 3.1%Internal Medicine Physician3.1%Hematology (Internal Medicine) Physician - 0%Hematology (Internal Medicine) Physician0%
Largest specialties in New Jersey (% of in-state providers)

Medicare quality performance, MIPS

Tracy Proverbs-Singh, M.D.'s 2023 MIPS final score plotted against the Hematology (Internal Medicine) Physician national average

Near national average
MIPS Final Score
83.5/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology (Internal Medicine) Physician) - 83.5/100 vs national avg 83.1

0%100%National avg83%83.5%
MIPS final score (Hematology (Internal Medicine) Physician) - 83.5/100 vs national avg 83.1
How MIPS and board certification work

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Tracy Proverbs-Singh, M.D. appears in the CMS NPPES registry as a Hematology (Internal Medicine) Physician provider holding M.D. credentials at 92 2ND ST, Hackensack, NJ, 07601, with a listed phone of (551) 996-5863. NPI 1730321662 was issued on 03/24/2009.

Medicare Part D records for calendar year 2023 show 655 prescription claims written by this provider, covering 134 Medicare beneficiaries and totaling roughly $1.4 million in drug spend, with an opioid prescribing rate of 5.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.5/100 for the 2023 performance year (Quality 77.9, Cost 55), compared with the national average of 83.1.

Hematology (Internal Medicine) Physician is a narrow specialty nationwide, with 1,436 enrolled providers across 50 states and an average of 693 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.

Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

92 2ND ST
Hackensack, NJ 07601
(551) 996-5863

Provider Details

NPI 1730321662
Specialty Hematology (Internal Medicine) Physician
Credentials M.D.
Gender Female
NPI Issued 03/24/2009

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

83.4834
Final Score
Avg: 83.1
77.918
Quality
54.975
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Tracy Proverbs-Singh, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Regional Cancer Care Associates LLC
Hackensack, NJ

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Tracy Proverbs-Singh, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.0K

Largest payer

E.R. Squibb & Sons, L.L.C.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

655
Total Claims
$1.4M
Total Drug Cost
134
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
762
Total Day Supply
16,389
Generic Drug Cost
$72K
Opioid Claims
38 (5.8% rate)
Antibiotic Claims
28

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
2.81
Gender Split
50% female / 50% male
Age Distribution
<65: 12, 65-74: 59, 75-84: 48, 85+: 15

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Tracy Proverbs-Singh, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Ondansetron Hcl
 68
Prochlorperazine Maleate
 58
Eliquis
Apixaban
39
Pantoprazole Sodium
 38
Prednisone
 32
Lonsurf
Trifluridine/Tipiracil Hcl
29
Furosemide
 28
Potassium Chloride
 19
Levothyroxine Sodium
 15
Ondansetron Odt
Ondansetron
15

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Hematology (Internal Medicine) Physician in NJ → All providers in New Jersey → Compare specialties →

Hematology (Internal Medicine) Physician Overview

How Tracy Proverbs-Singh, M.D. fits within the Hematology (Internal Medicine) Physician landscape nationally.

1,436
Hematology (Internal Medicine) Physician Providers in US
50
States with Hematology (Internal Medicine) Physician
693
Avg Claims per Provider

Tracy Proverbs-Singh, M.D.'s 655 claims are below the specialty average of 693.

Nearby Hematology (Internal Medicine) Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Proverbs-Singh.

Dr. Robert Alter
MD
Hackensack, NJ
Dr. Fazal Bari
M.D.
Mountain Lakes, NJ
Dr. Noa Biran
M.D.
Hackensack, NJ
Marcus Carr
North Brunswick, NJ
Dr. Allan Louie Cruz
M.D.
Jersey City, NJ

Compare Hematology (Internal Medicine) Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the New Jersey medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Hematology (Internal Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

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Frequently Asked Questions

What is Tracy Proverbs-Singh, M.D.'s specialty? ▼
Tracy Proverbs-Singh, M.D. specializes in Hematology (Internal Medicine) Physician and practices in Hackensack, New Jersey. Credentials: M.D..
How much does Tracy Proverbs-Singh, M.D. prescribe under Medicare Part D? ▼
In 2023, Tracy Proverbs-Singh, M.D. wrote 655 Medicare Part D claims totaling $1.4M in drug costs for 134 beneficiaries.
What is Tracy Proverbs-Singh, M.D.'s Medicare quality score? ▼
Tracy Proverbs-Singh, M.D. has a CMS MIPS Final Score of 83.5/100 (Quality: 77.9, Cost: 55). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tracy Proverbs-Singh, M.D. located? ▼
Tracy Proverbs-Singh, M.D. is located at 92 2ND ST, Hackensack, NJ, 07601. Phone: (551) 996-5863.
What is Tracy Proverbs-Singh, M.D.'s NPI number? ▼
Tracy Proverbs-Singh, M.D.'s National Provider Identifier (NPI) is 1730321662, issued on 03/24/2009.
Does Tracy Proverbs-Singh, M.D. prescribe opioids? ▼
Yes, Tracy Proverbs-Singh, M.D. had 38 opioid claims in 2023 with an opioid prescribing rate of 5.8%.
How many Hematology (Internal Medicine) Physician providers are there in the US? ▼
There are 1,436 Hematology (Internal Medicine) Physician providers across 50 states in the US. The average Hematology (Internal Medicine) Physician provider writes 693 Medicare Part D claims per year.
What drugs does Tracy Proverbs-Singh, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Tracy Proverbs-Singh, M.D.'s most frequently prescribed drugs include Ondansetron Hcl, Prochlorperazine Maleate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tracy Proverbs-Singh, M.D. accept Medicare? ▼
Tracy Proverbs-Singh, M.D. appears in CMS Medicare data with 655 Part D claims and 134 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tracy Proverbs-Singh, M.D.'s credentials? ▼
Tracy Proverbs-Singh, M.D.'s NPI is 1730321662 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

View source datasets and methodology notes
Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.