NPPES file of Aug 9, 2026

Melanie C. Nicole Irwin, MD

Pediatric Rehabilitation Medicine Physician · Orange, CA

Melanie C. Nicole Irwin, MD is a pediatric rehabilitation medicine physician with a practice address in Orange, California, and NPI 1518918358, issued on May 15, 2006. Check the license (California A99872, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518918358
Name
Melanie C. Nicole Irwin
Credential
MD
Primary taxonomy
Pediatric Rehabilitation Medicine Physician 2081P0010X
License number
A99872 CA
Self-reported in NPPES; status is on the state search
Practice location
1010 W. Laveta Ave, Orange, CA 92868
Phone
(714) 835-2724
Enumerated
May 15, 2006
Record last updated
Jan 3, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(714) 835-2751
Medicaid ID
34567000 WI
Medicare enrollment
Enrolled (PECOS I20070827000519); accepts Medicare assignment
Medical or professional school
Temple University School Of Medicine, 1999
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1010 W. Laveta Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Hisham El-Bayar, M.D., F.A.C.S.Surgery Physician1659376622

Verify Melanie C. Nicole Irwin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A99872
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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43% fewer Medicare Part D claims than the average pediatric rehabilitation medicine physician in 2024

70 Medicare Part D claims, against an average of 123 among the 94 providers of this specialty who prescribed in Part D.

  1. Melanie Irwin70
  2. Specialty average123

Most prescribed

  1. Tizanidine Hcl23 claims
  2. Baclofen19 claims
  3. Scopolamine11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $151.53

6 payments; by number, the most common kind was food and beverage; the largest payer was Ipsen Biopharmaceuticals, Inc. The 112 providers of this specialty with any payment received $1,993.03 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Melanie Irwin$151.53
  2. Specialty average$1,993.03

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Childrens Hospital OF Orange CountyOrange, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Melanie C. Nicole Irwin among 41 pediatric rehabilitation medicine physician records in California

Melanie C. Nicole Irwin, MD is one of 41 pediatric rehabilitation medicine physician records with a practice address in California. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.

  • NPI issued2006 · 2% of these records are older, 85% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 27% of these records are
  • Graduated1999 · median 2009 among the 11 with a school on file
  • Record last updated2014 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2081P0010X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pediatric Rehabilitation Medicine Physician providers in California

There are 41 pediatric rehabilitation medicine physician records in California.

The 8 pediatric rehabilitation medicine physician records with the nearest ZIP codes

  1. Shannon O'Brien, PT, DPTLaguna Hills, CA 926531619407459
  2. Doreen Spearman, PTYucaipa, CA 923991891265989
  3. Thaddeus Wilson, M.D.Loma Linda, CA 923541184839896
  4. Amy QuachSan Diego, CA 921261316445885
  5. Jeffrey Algra, M.D.San Diego, CA 921231457664518
  6. Susan Biffl, MDSan Diego, CA 921231366589640
  7. Mackenzie Brown, D.O.San Diego, CA 921231275812323
  8. Pritha DalalSan Diego, CA 921231609017532

Common questions

What is Melanie C. Nicole Irwin, MD's NPI number?

Melanie C. Nicole Irwin, MD's National Provider Identifier (NPI) is 1518918358, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Melanie C. Nicole Irwin, MD located?

The NPPES record lists a practice address at 1010 W. Laveta Ave, Orange, CA, 92868. Phone: (714) 835-2724. Providers update this record themselves, so call before visiting.

How can I verify Melanie C. Nicole Irwin, MD's license?

NPPES lists California license number A99872, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Melanie C. Nicole Irwin, MD prescribe under Medicare Part D?

In 2024, Melanie C. Nicole Irwin, MD had 70 Medicare Part D claims; the average among pediatric rehabilitation medicine physician prescribers was 123. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.