2026 NPPES data Obstetrics & Gynecology Physician NPI 1083642813 M.D.
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JOSEPH BROOKS, M.D.

Obstetrics & Gynecology 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
920
Medicare Part D claims · 245 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$134.64
6 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JOSEPH BROOKS, M.D. filed 920 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in PHOENIX, Arizona, prescribing 93% generic.

920
Part D claims, 2023
93%
generic prescribing
$134.64
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.

JOSEPH BROOKS, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

920 Top 25% higher than 75% 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%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

JOSEPH BROOKS, 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 JOSEPH BROOKS, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/29/2006

NPI 1083642813

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

920 414% vs specialty avg

2023 prescription claims

Specialty avg: 179

Specialty distribution in Arizona

How Obstetrics & Gynecology Physician compares to other specialties among Arizona providers

Arizona providers

Obstetrics & Gynecology Physician share within Arizona

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

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

JOSEPH BROOKS, M.D. appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding M.D. credentials at 300 W CLARENDON AVE STE 100, PHOENIX, AZ, 85013, with a listed phone of (602) 265-1112. NPI 1083642813 was issued on 06/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROOKS 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 920 prescription claims written by this provider, covering 245 Medicare beneficiaries and totaling roughly $47K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 2.0%. 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.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

300 W CLARENDON AVE STE 100
PHOENIX, AZ 85013

Provider Details

NPI 1083642813
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Male
NPI Issued 06/29/2006

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 JOSEPH BROOKS, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$135

Largest payer

Astellas Pharma US 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

JOSEPH BROOKS, M.D. — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 920 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.

920
Total Claims
$47K
Total Drug Cost
245
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,376
Total Day Supply
35,266
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$17K
Generic Drug Cost
$29K
Opioid Claims
18 (2.0% rate)
Antibiotic Claims
46

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
0.94
Gender Split
100% female / 0% male
Age Distribution
<65: 20, 65-74: 135, 75-84: 72, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

What JOSEPH BROOKS, 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
Clobetasol Propionate
178
Estradiol
113
Fluconazole
98
Ketoconazole
88
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
44
Estradiol (Twice Weekly)
Estradiol
27
Prednisone
25
Hydroxyzine Hcl
23
Terconazole
22
Gabapentin
18

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

Obstetrics & Gynecology Physician Overview

How JOSEPH BROOKS, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

JOSEPH BROOKS, M.D.'s 920 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in Arizona

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

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOSEPH BROOKS, M.D.'s specialty?
JOSEPH BROOKS, M.D. specializes in Obstetrics & Gynecology Physician and practices in PHOENIX, Arizona. Credentials: M.D..
How much does JOSEPH BROOKS, M.D. prescribe under Medicare Part D?
In 2023, JOSEPH BROOKS, M.D. wrote 920 Medicare Part D claims totaling $47K in drug costs for 245 beneficiaries.
Where is JOSEPH BROOKS, M.D. located?
JOSEPH BROOKS, M.D. is located at 300 W CLARENDON AVE STE 100, PHOENIX, AZ, 85013. Phone: (602) 265-1112.
What is JOSEPH BROOKS, M.D.'s NPI number?
JOSEPH BROOKS, M.D.'s National Provider Identifier (NPI) is 1083642813, issued on 06/29/2006.
Does JOSEPH BROOKS, M.D. prescribe more brand-name or generic drugs?
JOSEPH BROOKS, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $17K in brand drug costs.
Does JOSEPH BROOKS, M.D. prescribe opioids?
Yes, JOSEPH BROOKS, M.D. had 18 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does JOSEPH BROOKS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOSEPH BROOKS, M.D.'s most frequently prescribed drugs include Clobetasol Propionate, Estradiol, Fluconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOSEPH BROOKS, M.D. accept Medicare?
JOSEPH BROOKS, M.D. appears in CMS Medicare data with 920 Part D claims and 245 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOSEPH BROOKS, M.D.'s credentials?
JOSEPH BROOKS, M.D.'s NPI is 1083642813 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