2026 NPPES data Sports Medicine (Neuromusculoskeletal Medicine) Physician NPI 1548308836 MD
Verify on CMS →

STEPHEN IERARDI, MD

Sports Medicine (Neuromusculoskeletal Medicine) Physician in LAGUNA HILLS, California. 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
2K
Medicare Part D claims · 201 beneficiaries · Sports Medicine (Neuromusculoskeletal Medicine) Physician avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.7K
115 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEPHEN IERARDI, MD filed 1,560 Medicare Part D claims in 2023 as a Sports Medicine (Neuromusculoskeletal Medicine) Physician in LAGUNA HILLS, California, prescribing 91% generic.

2K
Part D claims, 2023
91%
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.

STEPHEN IERARDI, MD's Medicare Part D volume vs every U.S. prescriber

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

1,560 Top 19% higher than 81% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 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 certification likely (heuristic — not verified)

STEPHEN IERARDI, MD 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 STEPHEN IERARDI, MD?

Quality data not reported

NPI registry status

Active

Issued 02/01/2007

NPI 1548308836

Primary specialty

Sports Medicine (Neuromusculoskeletal Medicine) Physician

Niche

552 US NPIs in this specialty

Medicare Part D claims

1,560 40% vs specialty avg

2023 prescription claims

Specialty avg: 1,113

Specialty distribution in California

How Sports Medicine (Neuromusculoskeletal Medicine) Physician compares to other specialties among California providers

California providers

Sports Medicine (Neuromusculoskeletal Medicine) Physician share within California

1. Sports Medicine (Neuromusculoskeletal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Sports Medicine (Neuromusculoskeletal Medicine) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Sports Medicine (Neuromusculoskeletal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Sports Medicine (Neuromusculoskeletal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Sports Medicine (Neuromusculoskeletal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Sports Medicine (Neuromusculoskeletal Medicine) 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).

STEPHEN IERARDI, MD is a Sports Medicine (Neuromusculoskeletal Medicine) Physician provider practicing in LAGUNA HILLS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1548308836. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

STEPHEN IERARDI, MD appears in the CMS NPPES registry as a Sports Medicine (Neuromusculoskeletal Medicine) Physician provider holding MD credentials at 24422 AVENIDA DE LA CARLOTA STE 272, LAGUNA HILLS, CA, 92653, with a listed phone of (949) 282-6500. NPI 1548308836 was issued on 02/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what IERARDI 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 1,560 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $128K in drug spend, split 9% brand-name and 91% 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.

Sports Medicine (Neuromusculoskeletal Medicine) Physician is a narrow specialty nationwide, with 552 enrolled providers across 51 states and an average of 1,113 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

24422 AVENIDA DE LA CARLOTA STE 272
LAGUNA HILLS, CA 92653

Provider Details

NPI 1548308836
Specialty Sports Medicine (Neuromusculoskeletal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 02/01/2007

Hospital and facility affiliations

Facilities where STEPHEN IERARDI, 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.

SCKE INC
LAGUNA HILLS, CA

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 STEPHEN IERARDI, MD. Source: openpaymentsdata.cms.gov.

Total received

$2.7K

Largest payer

ABBVIE 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 — California MBC 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 ~150K California medical licensees in 2023 — they are NOT specific to STEPHEN IERARDI, MD. To verify STEPHEN IERARDI, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

STEPHEN IERARDI, MD — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 1,560 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.

1,560
Total Claims
$128K
Total Drug Cost
201
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,728
Total Day Supply
108,215
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$95K
Generic Drug Cost
$33K
Antibiotic Claims
92

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.00
Gender Split
50% female / 50% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
89
Atorvastatin Calcium
87
Amlodipine Besylate
50
Amlodipine-Valsartan
Amlodipine Besylate/Valsartan
44
Metformin Hcl Er
Metformin Hcl
41
Valsartan
41
Rosuvastatin Calcium
39
Amlodipine Besylate-Benazepril
Amlodipine Besylate/Benazepril
35
Lisinopril
33
Diclofenac Sodium
32

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

Sports Medicine (Neuromusculoskeletal Medicine) Physician Overview

How STEPHEN IERARDI, MD fits within the Sports Medicine (Neuromusculoskeletal Medicine) Physician landscape nationally.

552
Sports Medicine (Neuromusculoskeletal Medicine) Physician Providers in US
51
States with Sports Medicine (Neuromusculoskeletal Medicine) Physician
1,113
Avg Claims per Provider

STEPHEN IERARDI, MD's 1,560 claims are above the specialty average of 1,113.

Nearby Sports Medicine (Neuromusculoskeletal Medicine) Physician Providers in California

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

Compare Sports Medicine (Neuromusculoskeletal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEPHEN IERARDI, MD's specialty?
STEPHEN IERARDI, MD specializes in Sports Medicine (Neuromusculoskeletal Medicine) Physician and practices in LAGUNA HILLS, California. Credentials: MD.
How much does STEPHEN IERARDI, MD prescribe under Medicare Part D?
In 2023, STEPHEN IERARDI, MD wrote 1,560 Medicare Part D claims totaling $128K in drug costs for 201 beneficiaries.
Where is STEPHEN IERARDI, MD located?
STEPHEN IERARDI, MD is located at 24422 AVENIDA DE LA CARLOTA STE 272, LAGUNA HILLS, CA, 92653. Phone: (949) 282-6500.
What is STEPHEN IERARDI, MD's NPI number?
STEPHEN IERARDI, MD's National Provider Identifier (NPI) is 1548308836, issued on 02/01/2007.
Does STEPHEN IERARDI, MD prescribe more brand-name or generic drugs?
STEPHEN IERARDI, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $95K in brand drug costs.
How many Sports Medicine (Neuromusculoskeletal Medicine) Physician providers are there in the US?
There are 552 Sports Medicine (Neuromusculoskeletal Medicine) Physician providers across 51 states in the US. The average Sports Medicine (Neuromusculoskeletal Medicine) Physician provider writes 1,113 Medicare Part D claims per year.
What drugs does STEPHEN IERARDI, MD prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN IERARDI, MD's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN IERARDI, MD accept Medicare?
STEPHEN IERARDI, MD appears in CMS Medicare data with 1,560 Part D claims and 201 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN IERARDI, MD's credentials?
STEPHEN IERARDI, MD's NPI is 1548308836 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