2026 NPPES data Anesthesiology Physician NPI 1255304655 MD
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STEVEN EISENFELD, MD

Anesthesiology Physician in SCOTTSDALE, 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
728
Medicare Part D claims · 112 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.226/100
▲ 8 pts above national avg 83.1 · [object Object]
Industry payments
$94.21
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEVEN EISENFELD, MD reported a CMS MIPS final score of 91.226/100 — above the 83.1 national average — and filed 728 Medicare Part D claims in 2023.

91.226/100
MIPS score · +8 vs avg
728
Part D claims, 2023
95%
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.

STEVEN EISENFELD, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

91 Top 37% higher than 63% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

STEVEN EISENFELD, MD 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 STEVEN EISENFELD, MD?

High performer (top quartile)

NPI registry status

Active

Issued 02/08/2006

NPI 1255304655

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

728 15% vs specialty avg

2023 prescription claims

Specialty avg: 860

MIPS final score

91.226/100 8.126000000000005% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Arizona

How Anesthesiology Physician compares to other specialties among Arizona providers

Arizona providers

Anesthesiology Physician share within Arizona

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

Medicare quality performance — MIPS

STEVEN EISENFELD, MD's 2023 MIPS final score plotted against the Anesthesiology Physician national average

High performer (top quartile)
MIPS Final Score
91.226/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Anesthesiology Physician) — 91.226/100 vs national avg 83.1

0%100%National avg83%91.2%
MIPS final score (Anesthesiology Physician) — 91.226/100 vs national avg 83.1

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).

STEVEN EISENFELD, MD appears in the CMS NPPES registry as a Anesthesiology Physician provider holding MD credentials at 3501 N SCOTTSDALE RD STE 221, SCOTTSDALE, AZ, 85251, with a listed phone of (480) 422-8510. NPI 1255304655 was issued on 02/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EISENFELD 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 728 prescription claims written by this provider, covering 112 Medicare beneficiaries and totaling roughly $38K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 60.3%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.226/100 for the 2023 performance year (Quality 82.4521), compared with the national average of 83.1.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

3501 N SCOTTSDALE RD STE 221
SCOTTSDALE, AZ 85251

Provider Details

NPI 1255304655
Specialty Anesthesiology Physician
Credentials MD
Gender Male
NPI Issued 02/08/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

91.226
Final Score
Avg: 83.1
82.4521
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where STEVEN EISENFELD, MD 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.

SWSS LLC
SCOTTSDALE, AZ

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 STEVEN EISENFELD, MD. Source: openpaymentsdata.cms.gov.

Total received

$94

Largest payer

SPR Therapeutics, 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

STEVEN EISENFELD, MD — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 728 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.

728
Total Claims
$38K
Total Drug Cost
112
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
762
Total Day Supply
21,436
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$26K
Generic Drug Cost
$11K
Opioid Claims
439 (60.3% rate)

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
1.47
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

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

What STEVEN EISENFELD, 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
Oxycodone Hcl
120
Tramadol Hcl
109
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
106
Pregabalin
106
Gabapentin
51
Duloxetine Hcl
47
Morphine Sulfate Er
Morphine Sulfate
24
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
24
Cyclobenzaprine Hcl
20
Xtampza Er
Oxycodone Myristate
17

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

Anesthesiology Physician Overview

How STEVEN EISENFELD, MD fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

STEVEN EISENFELD, MD's 728 claims are below the specialty average of 860.

Nearby Anesthesiology Physician Providers in Arizona

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

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

Frequently Asked Questions

What is STEVEN EISENFELD, MD's specialty?
STEVEN EISENFELD, MD specializes in Anesthesiology Physician and practices in SCOTTSDALE, Arizona. Credentials: MD.
How much does STEVEN EISENFELD, MD prescribe under Medicare Part D?
In 2023, STEVEN EISENFELD, MD wrote 728 Medicare Part D claims totaling $38K in drug costs for 112 beneficiaries.
What is STEVEN EISENFELD, MD's Medicare quality score?
STEVEN EISENFELD, MD has a CMS MIPS Final Score of 91.226/100 (Quality: 82.4521). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEVEN EISENFELD, MD located?
STEVEN EISENFELD, MD is located at 3501 N SCOTTSDALE RD STE 221, SCOTTSDALE, AZ, 85251. Phone: (480) 422-8510.
What is STEVEN EISENFELD, MD's NPI number?
STEVEN EISENFELD, MD's National Provider Identifier (NPI) is 1255304655, issued on 02/08/2006.
Does STEVEN EISENFELD, MD prescribe more brand-name or generic drugs?
STEVEN EISENFELD, MD's prescribing is 5% brand-name and 95% generic drugs by claim count, with $26K in brand drug costs.
Does STEVEN EISENFELD, MD prescribe opioids?
Yes, STEVEN EISENFELD, MD had 439 opioid claims in 2023 with an opioid prescribing rate of 60.3%.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does STEVEN EISENFELD, MD prescribe most often?
Based on 2023 Medicare Part D data, STEVEN EISENFELD, MD's most frequently prescribed drugs include Oxycodone Hcl, Tramadol Hcl, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEVEN EISENFELD, MD accept Medicare?
STEVEN EISENFELD, MD appears in CMS Medicare data with 728 Part D claims and 112 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEVEN EISENFELD, MD's credentials?
STEVEN EISENFELD, MD's NPI is 1255304655 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.
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 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