2026 NPPES data Urology Physician NPI 1689648685 M.D.
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ADRIAN FENG, M.D.

Urology Physician in PHOENIX, 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
2K
Medicare Part D claims · 577 beneficiaries · Urology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.4K
116 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ADRIAN FENG, M.D. filed 2,005 Medicare Part D claims in 2023 as a Urology Physician in PHOENIX, Arizona, prescribing 92% generic.

2K
Part D claims, 2023
92%
generic prescribing
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.

ADRIAN FENG, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

2,005 Top 16% higher than 84% 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 certification likely (heuristic — not verified)

ADRIAN FENG, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 ADRIAN FENG, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/15/2006

NPI 1689648685

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

2,005 57% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

Specialty distribution in Arizona

How Urology Physician compares to other specialties among Arizona providers

Arizona providers

Urology Physician share within Arizona

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

Specialty board-certification context

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

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

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

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

ADRIAN FENG, M.D. appears in the CMS NPPES registry as a Urology Physician provider holding M.D. credentials at 1313 E OSBORN RD, PHOENIX, AZ, 85014, with a listed phone of (602) 264-4431. NPI 1689648685 was issued on 02/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FENG 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 2,005 prescription claims written by this provider, covering 577 Medicare beneficiaries and totaling roughly $698K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 2.7%. 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.

Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 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

1313 E OSBORN RD
PHOENIX, AZ 85014

Provider Details

NPI 1689648685
Specialty Urology Physician
Credentials M.D.
Gender Male
NPI Issued 02/15/2006

Hospital and facility affiliations

Facilities where ADRIAN FENG, 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 UROLOGY SPECIALISTS PLLC
PHOENIX, AZ
BANNER - UNIVERSITY PHYSICIAN SPECIALISTS LLC
PHOENIX, 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 ADRIAN FENG, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$2.4K

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

ADRIAN FENG, M.D. — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 2,005 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.

2,005
Total Claims
$698K
Total Drug Cost
577
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,986
Total Day Supply
143,988
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$641K
Generic Drug Cost
$57K
Opioid Claims
54 (2.7% rate)
Antibiotic Claims
349

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
1.61
Gender Split
23% female / 77% male
Age Distribution
<65: 64, 65-74: 276, 75-84: 179, 85+: 58

Top Prescribed Drugs (Medicare Part D)

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

What ADRIAN FENG, 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
Tamsulosin Hcl
505
Finasteride
337
Oxybutynin Chloride Er
Oxybutynin Chloride
178
Cephalexin
148
Myrbetriq
Mirabegron
67
Alfuzosin Hcl Er
Alfuzosin Hcl
66
Methenamine Hippurate
56
Ciprofloxacin Hcl
53
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
50
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
43

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

Urology Physician Overview

How ADRIAN FENG, M.D. fits within the Urology Physician landscape nationally.

13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider

ADRIAN FENG, M.D.'s 2,005 claims are above the specialty average of 1,280.

Nearby Urology Physician Providers in Arizona

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

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

Frequently Asked Questions

What is ADRIAN FENG, M.D.'s specialty?
ADRIAN FENG, M.D. specializes in Urology Physician and practices in PHOENIX, Arizona. Credentials: M.D..
How much does ADRIAN FENG, M.D. prescribe under Medicare Part D?
In 2023, ADRIAN FENG, M.D. wrote 2,005 Medicare Part D claims totaling $698K in drug costs for 577 beneficiaries.
Where is ADRIAN FENG, M.D. located?
ADRIAN FENG, M.D. is located at 1313 E OSBORN RD, PHOENIX, AZ, 85014. Phone: (602) 264-4431.
What is ADRIAN FENG, M.D.'s NPI number?
ADRIAN FENG, M.D.'s National Provider Identifier (NPI) is 1689648685, issued on 02/15/2006.
Does ADRIAN FENG, M.D. prescribe more brand-name or generic drugs?
ADRIAN FENG, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $641K in brand drug costs.
Does ADRIAN FENG, M.D. prescribe opioids?
Yes, ADRIAN FENG, M.D. had 54 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Urology Physician providers are there in the US?
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does ADRIAN FENG, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ADRIAN FENG, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Oxybutynin Chloride Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ADRIAN FENG, M.D. accept Medicare?
ADRIAN FENG, M.D. appears in CMS Medicare data with 2,005 Part D claims and 577 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ADRIAN FENG, M.D.'s credentials?
ADRIAN FENG, M.D.'s NPI is 1689648685 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