NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1891724522 DO
Verify on CMS → Walter Krajewski, DO
Family Medicine Physician in York, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
24K
Medicare Part D claims · 378 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Walter Krajewski, DO filed 24,168 Medicare Part D claims in 2023 as a Family Medicine Physician in York, Pennsylvania, prescribing 92% generic.
- 24K
- Part D claims, 2023
- 92%
- generic prescribing
- ≥98th
- 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 1891724522 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-HEAVY · BOOK-MID · PHOTO-ENUM
- NPI-10 1891724522
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- RX-HEAVY 24K claims
- BOOK-MID 7,200 in Pennsylvania
- PHOTO-ENUM Lawrence Swink · 2006
Walter Krajewski, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
24,168 ≥ 98th percentile 98% 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-eligible specialty (heuristic, not verified)
Walter Krajewski, DO 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 Walter Krajewski, DO?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
24,168 7× vs specialty avg
Specialty distribution in Pennsylvania
How Family Medicine Physician compares to other specialties among Pennsylvania 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 Family Medicine 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 | 1891724522 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 07/03/2006 |
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Walter Krajewski, DO. To verify Walter Krajewski, DO's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Walter Krajewski, DO - brand share 8.0%
Family Medicine Physician average
8% brand-name claims vs 92% generic, on 24,168 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.
24,168
Total Claims
$842K
Total Drug Cost
378
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 29,665
- Total Day Supply
- 441,463
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $583K
- Generic Drug Cost
- $255K
- Opioid Claims
- 352 (1.5% rate)
- Antibiotic Claims
- 242
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 1.62
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 34, 65-74: 165, 75-84: 112, 85+: 67
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Walter Krajewski, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
1,585 claims
- Levothyroxine Sodium
Levothyroxine Sodium
956 claims
- Amlodipine Besylate
Amlodipine Besylate
804 claims
- Eliquis
Eliquis
801 claims
- Furosemide
Furosemide
754 claims
- Escitalopram Oxalate
Escitalopram Oxalate
716 claims
- Metoprolol Succinate 617
Metoprolol Succinate
617 claims
- Trazodone Hcl 590
Trazodone Hcl
590 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 1,585 |
| Levothyroxine Sodium | 956 |
| Amlodipine Besylate | 804 |
| Eliquis Apixaban | 801 |
| Furosemide | 754 |
| Escitalopram Oxalate | 716 |
| Metoprolol Succinate | 617 |
| Trazodone Hcl | 590 |
| Donepezil Hcl | 574 |
| Tamsulosin Hcl | 515 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Walter Krajewski, DO fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Walter Krajewski, DO's 24,168 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Krajewski, both outside Pennsylvania 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 Family Medicine Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Krajewski.
One of 7,200 Family Medicine Physician providers enrolled in Pennsylvania, 5 are shown here.
Christopher Aaron
Cresson, PA
Dr. Jose Abad
MD
Pittsburgh, PA
Dr. Ray Abarintos
MD
Philadelphia, PA
Dr. Jasim Abbasi
DO
Erie, PA
Dr. Alyssa Abbott
CRNP
Hermitage, PA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Walter Krajewski, DO's specialty? ▼
Walter Krajewski, DO specializes in Family Medicine Physician and practices in York, Pennsylvania. Credentials: DO.
How much does Walter Krajewski, DO prescribe under Medicare Part D? ▼
In 2023, Walter Krajewski, DO wrote 24,168 Medicare Part D claims totaling $842K in drug costs for 378 beneficiaries.
Where is Walter Krajewski, DO located? ▼
Walter Krajewski, DO is located at 3230 EASTERN BLVD, York, PA, 17402. Phone: (717) 757-1755.
What is Walter Krajewski, DO's NPI number? ▼
Walter Krajewski, DO's National Provider Identifier (NPI) is 1891724522, issued on 07/03/2006.
Does Walter Krajewski, DO prescribe more brand-name or generic drugs? ▼
Walter Krajewski, DO's prescribing is 8% brand-name and 92% generic drugs by claim count, with $583K in brand drug costs.
Does Walter Krajewski, DO prescribe opioids? ▼
Yes, Walter Krajewski, DO had 352 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Walter Krajewski, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Walter Krajewski, DO's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Walter Krajewski, DO accept Medicare? ▼
Walter Krajewski, DO appears in CMS Medicare data with 24,168 Part D claims and 378 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Walter Krajewski, DO's credentials? ▼
Walter Krajewski, DO's NPI is 1891724522 with credentials DO. 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.