NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1235101916 D.O.
Verify on CMS → Waldemar Klimek, D.O.
Obstetrics & Gynecology Physician in Penfield, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
192
Medicare Part D claims · 73 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$528.56
25 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Waldemar Klimek, D.O. filed 192 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Penfield, New York, prescribing 82% generic.
- 192
- Part D claims, 2023
- 82%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥35th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1235101916 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1235101916
- ENUM-LEGACY 2006
- TAX-MID 44K Obstetrics &
- RX-LIGHT 192
- BOOK-LIGHT 3,066 in New York
- PHOTO-ENUM Neysa Bartlett · 2006
Waldemar Klimek, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
192 ≥ 35th percentile 35% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Waldemar Klimek, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Waldemar Klimek, D.O.?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
192 7% vs specialty avg
Specialty distribution in New York
How Obstetrics & Gynecology Physician compares to other specialties among New York providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1235101916 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 02/06/2006 |
Hospital and facility affiliations
Facilities where Waldemar Klimek, D.O. 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.
Penfield Obstetrics And Gynecology LLP
Penfield, NY
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 Waldemar Klimek, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$529
Largest payer
MILLICENT 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.
License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Waldemar Klimek, D.O.. To verify Waldemar Klimek, D.O.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Waldemar Klimek, D.O. - brand share 18.0%
Obstetrics & Gynecology Physician average
18% brand-name claims vs 82% generic, on 192 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.
192
Total Claims
$20K
Total Drug Cost
73
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 339
- Total Day Supply
- 8,976
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $8K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 71.0 years
- Avg HCC Risk Score
- 0.76
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Waldemar Klimek, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Estradiol
Estradiol
28 claims
- Clotrimazole-Betam…
Clotrimazole-Betamethasone
26 claims
- Escitalopram Oxalate
Escitalopram Oxalate
13 claims
- Fluconazole
Fluconazole
12 claims
- Zolpidem Tartrate Er
Zolpidem Tartrate Er
12 claims
| Drug | Claims |
|---|---|
| Estradiol | 28 |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 26 |
| Escitalopram Oxalate | 13 |
| Fluconazole | 12 |
| Zolpidem Tartrate Er Zolpidem Tartrate | 12 |
| Premarin "Estrogens | N/A |
* 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 Waldemar Klimek, D.O. fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Waldemar Klimek, D.O.'s 192 claims are above the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Klimek, both outside New York so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Klimek.
One of 3,066 Obstetrics & Gynecology Physician providers enrolled in New York, 5 are shown here.
Dr. Gila Aaron
M.D.
New York, NY
Dr. David Abayev
D.O.
Rego Park, NY
Dr. Maria Abbattista
MD
Scarsdale, NY
Dr. Steven Abbey
MD
Buffalo, NY
Dr. Aiman Abboud
MD DO
Brooklyn, NY
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Waldemar Klimek, D.O.'s specialty? ▼
Waldemar Klimek, D.O. specializes in Obstetrics & Gynecology Physician and practices in Penfield, New York. Credentials: D.O..
How much does Waldemar Klimek, D.O. prescribe under Medicare Part D? ▼
In 2023, Waldemar Klimek, D.O. wrote 192 Medicare Part D claims totaling $20K in drug costs for 73 beneficiaries.
Where is Waldemar Klimek, D.O. located? ▼
Waldemar Klimek, D.O. is located at 43 WILLOW POND WAY, Penfield, NY, 14526. Phone: (585) 377-5420.
What is Waldemar Klimek, D.O.'s NPI number? ▼
Waldemar Klimek, D.O.'s National Provider Identifier (NPI) is 1235101916, issued on 02/06/2006.
Does Waldemar Klimek, D.O. prescribe more brand-name or generic drugs? ▼
Waldemar Klimek, D.O.'s prescribing is 18% brand-name and 82% generic drugs by claim count, with $12K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 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 Waldemar Klimek, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Waldemar Klimek, D.O.'s most frequently prescribed drugs include Estradiol, Clotrimazole-Betamethasone, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Waldemar Klimek, D.O. accept Medicare? ▼
Waldemar Klimek, D.O. appears in CMS Medicare data with 192 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Waldemar Klimek, D.O.'s credentials? ▼
Waldemar Klimek, D.O.'s NPI is 1235101916 with credentials D.O.. 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
View source datasets and methodology notes
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.