Romeo Abaya, M.D.
Romeo Abaya, M.D. is a Family Medicine Physician in Cottonwood, CA, registered under NPI 1598053506.
Getting there
The practice address on file is 20833 LONG BRANCH DR LASSEN MEDICAL GROUP INC, Cottonwood, CA 96022. 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 |
|---|---|---|
| 199481 | PA | Family Medicine Physician primary |
This provider holds licence 199481 issued in PA. 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 Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
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 | 1598053506 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 12, 2011 |
| Last updated | Nov 24, 2015 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
20833 LONG BRANCH DR LASSEN MEDICAL GROUP INC Cottonwood, CA 96022 (530) 347-3418 Fax (530) 528-4423 |
| Mailing address |
2450 SISTER MARY COLUMBA DR LASSEN MEDICAL GROUP INC. Red Bluff, CA 96080 |
| Other identifiers |
GR0089250
(CA) 553957 · RHC MEDICARE (CA) 553955 · RHC MEDICARE (CA) RHM53955FF (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 | 5 | 9 | 8 | 0 | 5 | 3 | 5 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 9 | 8 | 0 | 5 | 6 | 5 | 0 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.