F LEE IRWIN JR MD INC
F LEE IRWIN JR MD INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1871721860, based in Mission Viejo, CA. The organization lists 2 taxonomy classifications, with Interventional Pain Medicine Physician recorded as primary.
Getting there
The practice address on file is 26932 OSO PKWY SUITE 275, Mission Viejo, CA 92691. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A105673 | CA | Physical Medicine & Rehabilitation… |
| A105673 | CA | Interventional Pain Medicine Physician primary |
This provider holds licence A105673 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Interventional Pain Medicine covers
Interventional Pain Medicine is the discipline of medicine devoted to the diagnosis and treatment of pain and related disorders principally with the application of interventional techniques in managing subacute, chronic, persistent, and intractable pain, independently or in conjunction with other modalities of treatment. NUCC Health Care Provider Taxonomy, code 208VP0014X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 208100000X | Physical Medicine & Rehabilitation Physician | A105673 | CA | |
| 208VP0014X | Interventional Pain Medicine Physician Interventional Pain Medicine | A105673 | CA | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1871721860 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 29, 2009 |
| Last updated | Jan 20, 2012 |
| Status | Active |
| Practice address |
26932 OSO PKWY SUITE 275 Mission Viejo, CA 92691 (949) 916-8100 Fax (949) 916-8555 |
| Mailing address |
26131 MARGUERITE PKWY SUITE A Mission Viejo, CA 92692 |
| Other identifiers |
409525100
· Medicaid (CA) CK243Z · Other (CA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 8 | 7 | 1 | 7 | 2 | 1 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 5 | 2 | 2 | 8 | 3 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.