2026 NPPES data Internal Medicine Physician NPI 1508850439 MD
Verify on CMS →

NEERJA AHLOWALIA, MD

Internal Medicine Physician in CHICAGO, Illinois. 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
2K
Medicare Part D claims · 128 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: NEERJA AHLOWALIA, MD is a Internal Medicine Physician ([object Object]) practicing in CHICAGO, Illinois with a Medicare Part D prescribing footprint of 2K claims across 128 beneficiaries — 10% brand-name prescribing .

What stands out: NEERJA AHLOWALIA, MD filed 2,395 Medicare Part D claims in 2023 across CHICAGO, Illinois. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

NEERJA AHLOWALIA, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

NEERJA AHLOWALIA, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 09/07/2005

NPI 1508850439

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

2,395 12% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Internal Medicine Physician share within Illinois

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine 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).

NEERJA AHLOWALIA, MD is a Internal Medicine Physician provider practicing in CHICAGO, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1508850439. 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.

NEERJA AHLOWALIA, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 7906 S CRANDON AVE, CHICAGO, IL, 60617, with a listed phone of (773) 933-0800. NPI 1508850439 was issued on 09/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AHLOWALIA 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 2,395 prescription claims written by this provider, covering 128 Medicare beneficiaries and totaling roughly $135K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 1.8%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

7906 S CRANDON AVE
CHICAGO, IL 60617

Provider Details

NPI 1508850439
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 09/07/2005

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to NEERJA AHLOWALIA, MD. To verify NEERJA AHLOWALIA, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

NEERJA AHLOWALIA, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 2,395 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.

2,395
Total Claims
$135K
Total Drug Cost
128
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,417
Total Day Supply
156,742
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$94K
Generic Drug Cost
$40K
Opioid Claims
44 (1.8% rate)
Antibiotic Claims
123

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
1.49
Gender Split
66% female / 34% male
Age Distribution
<65: 20, 65-74: 64, 75-84: 32, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amlodipine Besylate
144
Simvastatin
133
Metoprolol Succinate
121
Gabapentin
94
Furosemide
90
Lisinopril
84
Metoprolol Tartrate
82
Hydrochlorothiazide
75
Albuterol Sulfate Hfa
Albuterol Sulfate
67
Metformin Hcl
62

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

Internal Medicine Physician Overview

How NEERJA AHLOWALIA, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

NEERJA AHLOWALIA, MD's 2,395 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Illinois

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

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

Frequently Asked Questions

What is NEERJA AHLOWALIA, MD's specialty?
NEERJA AHLOWALIA, MD specializes in Internal Medicine Physician and practices in CHICAGO, Illinois. Credentials: MD.
How much does NEERJA AHLOWALIA, MD prescribe under Medicare Part D?
In 2023, NEERJA AHLOWALIA, MD wrote 2,395 Medicare Part D claims totaling $135K in drug costs for 128 beneficiaries.
Where is NEERJA AHLOWALIA, MD located?
NEERJA AHLOWALIA, MD is located at 7906 S CRANDON AVE, CHICAGO, IL, 60617. Phone: (773) 933-0800.
What is NEERJA AHLOWALIA, MD's NPI number?
NEERJA AHLOWALIA, MD's National Provider Identifier (NPI) is 1508850439, issued on 09/07/2005.
Does NEERJA AHLOWALIA, MD prescribe more brand-name or generic drugs?
NEERJA AHLOWALIA, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $94K in brand drug costs.
Does NEERJA AHLOWALIA, MD prescribe opioids?
Yes, NEERJA AHLOWALIA, MD had 44 opioid claims in 2023 with an opioid prescribing rate of 1.8%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does NEERJA AHLOWALIA, MD prescribe most often?
Based on 2023 Medicare Part D data, NEERJA AHLOWALIA, MD's most frequently prescribed drugs include Amlodipine Besylate, Simvastatin, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NEERJA AHLOWALIA, MD accept Medicare?
NEERJA AHLOWALIA, MD appears in CMS Medicare data with 2,395 Part D claims and 128 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NEERJA AHLOWALIA, MD's credentials?
NEERJA AHLOWALIA, MD's NPI is 1508850439 with credentials MD. 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