2026 NPPES data Urology Physician NPI 1073552352 MD
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ROBERT MAYER, MD

Urology Physician in GRANTS PASS, Oregon. 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
355
Medicare Part D claims · 98 beneficiaries · Urology Physician avg: 1K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ROBERT MAYER, MD filed 355 Medicare Part D claims in 2023 as a Urology Physician in GRANTS PASS, Oregon, prescribing 92% generic.

355
Part D claims, 2023
92%
generic prescribing

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.

ROBERT MAYER, MD's Medicare Part D volume vs every U.S. prescriber

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

355 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 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)

ROBERT MAYER, 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).

What does the federal data show about ROBERT MAYER, MD?

Quality data not reported

NPI registry status

Active

Issued 06/05/2006

NPI 1073552352

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

355 72% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

Specialty distribution in Oregon

How Urology Physician compares to other specialties among Oregon providers

Oregon providers

Urology Physician share within Oregon

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

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).

ROBERT MAYER, MD appears in the CMS NPPES registry as a Urology Physician provider holding MD credentials at 700 SW RAMSEY AVE STE 101, GRANTS PASS, OR, 97527, with a listed phone of (541) 507-2020. NPI 1073552352 was issued on 06/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAYER 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 355 prescription claims written by this provider, covering 98 Medicare beneficiaries and totaling roughly $32K in drug spend, split 8% brand-name and 92% 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.

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

700 SW RAMSEY AVE STE 101
GRANTS PASS, OR 97527

Provider Details

NPI 1073552352
Specialty Urology Physician
Credentials MD
Gender Male
NPI Issued 06/05/2006

Brand vs generic prescribing mix · Generic-heavy

ROBERT MAYER, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 355 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.

355
Total Claims
$32K
Total Drug Cost
98
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
809
Total Day Supply
23,467
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$24K
Generic Drug Cost
$9K
Antibiotic Claims
47

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.19
Gender Split
23% female / 77% male

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT MAYER, MD 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
105
Finasteride
82
Oxybutynin Chloride Er
Oxybutynin Chloride
23
Doxazosin Mesylate
21
Myrbetriq
Mirabegron
21
Cephalexin
18
Alfuzosin Hcl Er
Alfuzosin Hcl
11

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

Urology Physician Overview

How ROBERT MAYER, MD 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

ROBERT MAYER, MD's 355 claims are below the specialty average of 1,280.

Nearby Urology Physician Providers in Oregon

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

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

Frequently Asked Questions

What is ROBERT MAYER, MD's specialty?
ROBERT MAYER, MD specializes in Urology Physician and practices in GRANTS PASS, Oregon. Credentials: MD.
How much does ROBERT MAYER, MD prescribe under Medicare Part D?
In 2023, ROBERT MAYER, MD wrote 355 Medicare Part D claims totaling $32K in drug costs for 98 beneficiaries.
Where is ROBERT MAYER, MD located?
ROBERT MAYER, MD is located at 700 SW RAMSEY AVE STE 101, GRANTS PASS, OR, 97527. Phone: (541) 507-2020.
What is ROBERT MAYER, MD's NPI number?
ROBERT MAYER, MD's National Provider Identifier (NPI) is 1073552352, issued on 06/05/2006.
Does ROBERT MAYER, MD prescribe more brand-name or generic drugs?
ROBERT MAYER, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $24K in brand drug costs.
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 ROBERT MAYER, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT MAYER, MD'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 ROBERT MAYER, MD accept Medicare?
ROBERT MAYER, MD appears in CMS Medicare data with 355 Part D claims and 98 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT MAYER, MD's credentials?
ROBERT MAYER, MD's NPI is 1073552352 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