2026 NPPES data Psychiatry Physician NPI 1639266943 M.D.
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AIJAZ NANJIANI, M.D.

Psychiatry Physician in PARAMUS, New Jersey. 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
24K
Medicare Part D claims · 694 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$17.2K
17 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

AIJAZ NANJIANI, M.D. filed 24,108 Medicare Part D claims in 2023 as a Psychiatry Physician in PARAMUS, New Jersey, prescribing 94% generic.

24K
Part D claims, 2023
94%
generic prescribing
$17.2K
industry payments (Sunshine Act)

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.

AIJAZ NANJIANI, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

24,108 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

AIJAZ NANJIANI, M.D. 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).

What does the federal data show about AIJAZ NANJIANI, M.D.?

Quality data not reported

NPI registry status

Active

Issued 10/06/2006

NPI 1639266943

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

24,108 2223% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in New Jersey

How Psychiatry Physician compares to other specialties among New Jersey providers

New Jersey providers

Psychiatry Physician share within New Jersey

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within New Jersey

Specialty board-certification context

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

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

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

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

AIJAZ NANJIANI, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 230 E RIDGEWOOD AVE, PARAMUS, NJ, 07652, with a listed phone of (201) 967-4000. NPI 1639266943 was issued on 10/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NANJIANI 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 24,108 prescription claims written by this provider, covering 694 Medicare beneficiaries and totaling roughly $2.3 million in drug spend, split 6% brand-name and 94% generic by claim count. 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

230 E RIDGEWOOD AVE
PARAMUS, NJ 07652

Provider Details

NPI 1639266943
Specialty Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 10/06/2006

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 AIJAZ NANJIANI, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$17.2K

Largest payer

ABBVIE 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 · Generic-heavy

AIJAZ NANJIANI, M.D. — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 24,108 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.

24,108
Total Claims
$2.3M
Total Drug Cost
694
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
27,362
Total Day Supply
797,072
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$1.3M
Generic Drug Cost
$1.0M

Patient Demographics

Average Patient Age
56.8 years
Avg HCC Risk Score
1.26
Gender Split
44% female / 56% male
Age Distribution
<65: 444, 65-74: 146, 75-84: 69, 85+: 35

Top Prescribed Drugs (Medicare Part D)

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

What AIJAZ NANJIANI, 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
Risperidone
2,681
Escitalopram Oxalate
1,369
Quetiapine Fumarate
1,251
Divalproex Sodium Er
Divalproex Sodium
1,228
Clonazepam
1,221
Divalproex Sodium
1,047
Lorazepam
1,013
Olanzapine
957
Benztropine Mesylate
926
Aripiprazole
909

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

Psychiatry Physician Overview

How AIJAZ NANJIANI, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

AIJAZ NANJIANI, M.D.'s 24,108 claims are above the specialty average of 1,038.

Nearby Psychiatry Physician Providers in New Jersey

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AIJAZ NANJIANI, M.D.'s specialty?
AIJAZ NANJIANI, M.D. specializes in Psychiatry Physician and practices in PARAMUS, New Jersey. Credentials: M.D..
How much does AIJAZ NANJIANI, M.D. prescribe under Medicare Part D?
In 2023, AIJAZ NANJIANI, M.D. wrote 24,108 Medicare Part D claims totaling $2.3M in drug costs for 694 beneficiaries.
Where is AIJAZ NANJIANI, M.D. located?
AIJAZ NANJIANI, M.D. is located at 230 E RIDGEWOOD AVE, PARAMUS, NJ, 07652. Phone: (201) 967-4000.
What is AIJAZ NANJIANI, M.D.'s NPI number?
AIJAZ NANJIANI, M.D.'s National Provider Identifier (NPI) is 1639266943, issued on 10/06/2006.
Does AIJAZ NANJIANI, M.D. prescribe more brand-name or generic drugs?
AIJAZ NANJIANI, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $1.3M in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does AIJAZ NANJIANI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, AIJAZ NANJIANI, M.D.'s most frequently prescribed drugs include Risperidone, Escitalopram Oxalate, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AIJAZ NANJIANI, M.D. accept Medicare?
AIJAZ NANJIANI, M.D. appears in CMS Medicare data with 24,108 Part D claims and 694 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AIJAZ NANJIANI, M.D.'s credentials?
AIJAZ NANJIANI, M.D.'s NPI is 1639266943 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