2026 NPPES data Colon & Rectal Surgery Physician NPI 1609053545 M.D
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NEERAJ SINGH, M.D

Colon & Rectal Surgery Physician in GLENDALE, Arizona. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
489
Medicare Part D claims · 266 beneficiaries · Colon & Rectal Surgery Physician avg: 196
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$35.09
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: NEERAJ SINGH, M.D is a Colon & Rectal Surgery Physician ([object Object]) practicing in GLENDALE, Arizona with a Medicare Part D prescribing footprint of 489 claims across 266 beneficiaries — 10% brand-name prescribing . Industry payments of $35.09 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: NEERAJ SINGH, M.D filed 489 Medicare Part D claims in 2023 across GLENDALE, Arizona. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

NEERAJ SINGH, M.D at a glance

Quality data not reported

NPI registry status

Active

Issued 01/23/2008

NPI 1609053545

Primary specialty

Colon & Rectal Surgery Physician

Niche

1,608 US NPIs in this specialty

Medicare Part D claims

489 149% vs specialty avg

2023 prescription claims

Specialty avg: 196

Specialty distribution in Arizona

How Colon & Rectal Surgery Physician compares to other specialties among Arizona providers

Arizona providers

Colon & Rectal Surgery Physician share within Arizona

1. Colon & Rectal Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Colon & Rectal Surgery Physician share within Arizona

Specialty board-certification context

Estimated specialty board-certified rate — Colon & Rectal Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Colon & Rectal Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Colon & Rectal Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Colon & Rectal Surgery Physician) — ABMS / AOA estimate

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).

NEERAJ SINGH, M.D is a Colon & Rectal Surgery Physician provider practicing in GLENDALE, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D. NPI: 1609053545. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

NEERAJ SINGH, M.D appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding M.D credentials at 20325 N 51ST AVE STE 124, GLENDALE, AZ, 85308, with a listed phone of (623) 226-4025. NPI 1609053545 was issued on 01/23/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SINGH most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 489 prescription claims written by this provider, covering 266 Medicare beneficiaries and totaling roughly $9K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 11.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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

20325 N 51ST AVE STE 124
GLENDALE, AZ 85308

Provider Details

NPI 1609053545
Specialty Colon & Rectal Surgery Physician
Credentials M.D
Gender Male
NPI Issued 01/23/2008

Hospital and facility affiliations

Facilities where NEERAJ 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.

ARIZONA ADVANCED SURGERY LLC
GLENDALE, AZ

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 NEERAJ SINGH, M.D. Source: openpaymentsdata.cms.gov.

Total received

$35

Largest payer

Braintree Laboratories, Inc.

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.

Brand vs generic prescribing mix · Typical

NEERAJ SINGH, M.D — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 489 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

489
Total Claims
$9K
Total Drug Cost
266
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
489
Total Day Supply
2,092
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$3K
Generic Drug Cost
$6K
Opioid Claims
57 (11.7% rate)
Antibiotic Claims
151

Patient Demographics

Average Patient Age
70.1 years
Avg HCC Risk Score
1.26
Gender Split
44% female / 56% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metronidazole
61
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
58
Neomycin Sulfate
57
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
45
Hydrocortisone
31
Procto-Med Hc
Hydrocortisone
22
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
19
Lidocaine-Prilocaine
Lidocaine/Prilocaine
17
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
13
Gavilyte-G
"Peg3350/Sod Sulf
N/A

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

Colon & Rectal Surgery Physician Overview

How NEERAJ SINGH, M.D fits within the Colon & Rectal Surgery Physician landscape nationally.

1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider

NEERAJ SINGH, M.D's 489 claims are above the specialty average of 196.

Nearby Colon & Rectal Surgery Physician Providers in Arizona

Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as SINGH.

Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NEERAJ SINGH, M.D's specialty?
NEERAJ SINGH, M.D specializes in Colon & Rectal Surgery Physician and practices in GLENDALE, Arizona. Credentials: M.D.
How much does NEERAJ SINGH, M.D prescribe under Medicare Part D?
In 2023, NEERAJ SINGH, M.D wrote 489 Medicare Part D claims totaling $9K in drug costs for 266 beneficiaries.
Where is NEERAJ SINGH, M.D located?
NEERAJ SINGH, M.D is located at 20325 N 51ST AVE STE 124, GLENDALE, AZ, 85308. Phone: (623) 226-4025.
What is NEERAJ SINGH, M.D's NPI number?
NEERAJ SINGH, M.D's National Provider Identifier (NPI) is 1609053545, issued on 01/23/2008.
Does NEERAJ SINGH, M.D prescribe more brand-name or generic drugs?
NEERAJ SINGH, M.D's prescribing is 10% brand-name and 90% generic drugs by claim count, with $3K in brand drug costs.
Does NEERAJ SINGH, M.D prescribe opioids?
Yes, NEERAJ SINGH, M.D had 57 opioid claims in 2023 with an opioid prescribing rate of 11.7%.
How many Colon & Rectal Surgery Physician providers are there in the US?
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
What drugs does NEERAJ SINGH, M.D prescribe most often?
Based on 2023 Medicare Part D data, NEERAJ SINGH, M.D's most frequently prescribed drugs include Metronidazole, Peg 3350-Electrolyte, Neomycin Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NEERAJ SINGH, M.D accept Medicare?
NEERAJ SINGH, M.D appears in CMS Medicare data with 489 Part D claims and 266 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NEERAJ SINGH, M.D's credentials?
NEERAJ SINGH, M.D's NPI is 1609053545 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

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.
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