Gary Feldman, M.B.CHB
Gary Feldman, M.B.CHB is a Sleep Medicine (Family Medicine) Physician in Irvine, CA, registered under NPI 1891715009. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 4902 IRVINE CENTER DR STE 104, Irvine, CA 92604. 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 |
|---|---|---|
| A86656 | CA | Sleep Medicine (Family Medicine) Physician primary |
| A86656 | CA | Pediatric Sleep Medicine Physician |
This provider holds licence A86656 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Sleep Medicine
- PAC ID
- 5092937862
- Enrollment ID
- I20150512002295
Medicare enrolment is recorded as approved under the provider type Practitioner - Sleep Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Sleep Medicine covers
A Family Medicine Physician who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders. NUCC Health Care Provider Taxonomy, code 207QS1201X
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 | |
|---|---|---|---|---|
| 207QS1201X | Sleep Medicine (Family Medicine) Physician Sleep Medicine | A86656 | CA | primary |
| 2080S0012X | Pediatric Sleep Medicine Physician Sleep Medicine | A86656 | CA |
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1891715009 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 20, 2006 |
| Last updated | Sep 21, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | M.B.CHB |
| Practice address |
4902 IRVINE CENTER DR STE 104 Irvine, CA 92604 (949) 446-8990 Fax (949) 446-8535 |
| Mailing address |
PO BOX 12315 Orange, CA 92859 |
| Other identifiers |
00A866560
· Medicaid (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 | 9 | 1 | 7 | 1 | 5 | 0 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 9 | 1 | 5 | 1 | 1 | 0 | 0 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.