NPI registry status
Active
2026 NPPES data Orthopaedic Surgery of the Spine Physician NPI 1831552173
Verify on CMS → William Zelenty
Orthopaedic Surgery of the Spine Physician in New York, 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 1,825 in Orthopaedic Surgery of the Spine 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
464
Medicare Part D claims · 132 beneficiaries · Orthopaedic Surgery of the Spine Physician avg: 380
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$3.9K
23 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Zelenty carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 464 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 464
- Part D claims, 2024
- 97%
- 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.
Federal trust snapshot
What official records show about William Zelenty
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1831552173), first enumerated 04/04/2016.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 464 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$3.9K in reported industry payments (23 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
New York statewide board action statistics are published annually — these figures describe aggregate state activity, not William Zelenty's individual license status. Verify directly with the state medical board.
Source: NYSBPMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1831552173 · Orthopaedic Surgery of the Spine Physician
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-NEUTRAL · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1831552173
- ENUM-MID 2016
- TAX-NARROW 1,825
- MIPS-NEUTRAL 75/100
- RX-LIGHT 464
- BOOK-THIN 132 in New York
- PHOTO-ENUM Karan Patel, MD · 2016
William Zelenty's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
464 ≥ 61st percentile 61% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
William Zelenty practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 William Zelenty?
CMS neutral score, not measuredPrimary specialty
Orthopaedic Surgery of the Spine Physician
Medicare Part D claims
464 22% vs specialty avg
MIPS final score
75/100
Specialty distribution in New York
How Orthopaedic Surgery of the Spine Physician compares to other specialties among New York providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1831552173 |
|---|---|
| Specialty | Orthopaedic Surgery of the Spine Physician |
| Gender | Male |
| NPI Issued | 04/04/2016 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Zelenty 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.
NY Society For The Relief OF Ruptured And Crippled Maintaining
New York, 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 William Zelenty. Source: openpaymentsdata.cms.gov.
Total received
$3.9K
Largest payer
Medical Device Business Services, 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 William Zelenty. To verify William Zelenty'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 · Generic-heavy
William Zelenty - brand share 3.0%
Orthopaedic Surgery of the Spine Physician average
3% brand-name claims vs 97% generic, on 464 2024 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 2024.
464
Total Claims
$6K
Total Drug Cost
132
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 486.5
- Total Day Supply
- 8,680
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $4K
- Opioid Claims
- 89 (19.2% rate)
Patient Demographics
- Average Patient Age
- 72.9 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Zelenty prescribes most
Top Medicare Part D drugs by claim count, 2024
- Methylprednisolone
Methylprednisolone
70 claims
- Meloxicam
Meloxicam
67 claims
- Gabapentin
Gabapentin
56 claims
- Tramadol Hcl
Tramadol Hcl
37 claims
- Methocarbamol
Methocarbamol
36 claims
- Celecoxib
Celecoxib
33 claims
- Oxycodone Hcl
Oxycodone Hcl
29 claims
- Tizanidine Hcl 27
Tizanidine Hcl
27 claims
| Drug | Claims |
|---|---|
| Methylprednisolone | 70 |
| Meloxicam | 67 |
| Gabapentin | 56 |
| Tramadol Hcl | 37 |
| Methocarbamol | 36 |
| Celecoxib | 33 |
| Oxycodone Hcl | 29 |
| Tizanidine Hcl | 27 |
| Diclofenac Sodium | 17 |
| Pregabalin | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Orthopaedic Surgery of the Spine Physician in NY →
All providers in New York →
Compare specialties →
Orthopaedic Surgery of the Spine Physician Overview
How William Zelenty fits within the Orthopaedic Surgery of the Spine Physician landscape nationally.
1,825
Orthopaedic Surgery of the Spine Physician Providers in US
51
States with Orthopaedic Surgery of the Spine Physician
380
Avg Claims per Provider
William Zelenty's 464 claims are above the specialty average of 380.
Nationwide Orthopaedic Surgery of the Spine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Zelenty, both outside New York so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2016)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Orthopaedic Surgery of the Spine Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Zelenty.
One of 132 Orthopaedic Surgery of the Spine Physician providers enrolled in New York, 5 are shown here.
Dr. Armin Afsar-Keshmiri
M.D.
Glens Falls, NY
Dr. Marc Agulnick
MD
Mineola, NY
Dr. Todd Albert
MD
New York, NY
Dr. Paul Alongi
M.D.
Huntington Station, NY
Dr. Joshua Auerbach
MD
Bronx, NY
Compare Orthopaedic Surgery of the Spine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Zelenty's specialty? ▼
William Zelenty specializes in Orthopaedic Surgery of the Spine Physician and practices in New York, New York.
How much does William Zelenty prescribe under Medicare Part D? ▼
In 2024, William Zelenty wrote 464 Medicare Part D claims totaling $6K in drug costs for 132 beneficiaries.
What is William Zelenty's Medicare quality score? ▼
William Zelenty has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Zelenty located? ▼
William Zelenty is located at 535 E 70TH ST DEPT OF, New York, NY, 10021. Phone: (212) 606-1000.
What is William Zelenty's NPI number? ▼
William Zelenty's National Provider Identifier (NPI) is 1831552173, issued on 04/04/2016.
Does William Zelenty prescribe more brand-name or generic drugs? ▼
William Zelenty's prescribing is 3% brand-name and 97% generic drugs by claim count, with $2K in brand drug costs.
Does William Zelenty prescribe opioids? ▼
Yes, William Zelenty had 89 opioid claims in 2024 with an opioid prescribing rate of 19.2%.
How many Orthopaedic Surgery of the Spine Physician providers are there in the US? ▼
There are 1,825 Orthopaedic Surgery of the Spine Physician providers across 51 states in the US. The average Orthopaedic Surgery of the Spine Physician provider writes 380 Medicare Part D claims per year.
What drugs does William Zelenty prescribe most often? ▼
Based on 2024 Medicare Part D data, William Zelenty's most frequently prescribed drugs include Methylprednisolone, Meloxicam, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Zelenty accept Medicare? ▼
William Zelenty appears in CMS Medicare data with 464 Part D claims and 132 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Zelenty's credentials? ▼
William Zelenty's NPI is 1831552173. 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 August 2026 (NPPES) / 2024 (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 August 2026.