DR. SERENE MAHIMA ALEXANDER D.O.
NPI 1841555109
Obstetrics & Gynecology in Santa Barbara, CA
About Dr. Serene Mahima Alexander D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SERENE MAHIMA ALEXANDER D.O. (NPI 1841555109) is an individual obstetrics & gynecology provider in Santa Barbara, California, licensed in California (20A14603) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Santa Barbara, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (2012).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Serene Mahima Alexander D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Serene Alexander reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Barbara, CA 93105
- Reassigned Medicare billing, California enrollment
- 403 clinicians in this Medicare group
Santa Barbara, CA 93105
- Reassigned Medicare billing, California enrollment
- 157 clinicians in this Medicare group
Merced, CA 95340
- Reassigned Medicare billing, California enrollment
- 126 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 93105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA BARBARA, CA 93105
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Serene Alexander's NPI number?
The NPI number for Serene Alexander is 1841555109. It was assigned to this individual provider in the NPPES registry on July 11, 2012.
Where is Serene Alexander located?
Serene Alexander practices at 317 W Pueblo St, Santa Barbara, CA 93105. The listed phone number is (805) 681-8911.
What is Serene Alexander's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Serene Alexander enrolled in Medicare?
Yes. Serene Alexander is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Serene Alexander's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Serene Alexander reassigns Medicare benefits to 4 organizations: Sansum Clinic (Santa Barbara, CA), Cottage Medical Foundation (Santa Barbara, CA), Merced Hospitalist Medical Group, Inc. (Merced, CA) and Obhg California, P.C. (Greenville, SC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Serene Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Serene Alexander was last updated on October 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Serene Mahima Alexander, D.O. · NPI 1841555109
Obstetrics & Gynecology physician in Santa Barbara, California. Individual provider, active in the CMS NPPES registry since July 11, 2012.
## Identity
- **NPI:** 1841555109 (Entity type: Individual)
- **Enumerated:** July 11, 2012
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 20A14603 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 317 W PUEBLO ST, Santa Barbara, CA 93105-4310
- **Phone:** (805) 681-8911 · **Fax:** (805) 898-3488
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Sansum Clinic (NPI 1932121514, Santa Barbara, CA); Cottage Medical Foundation (NPI 1770352130, Santa Barbara, CA); Merced Hospitalist Medical Group, Inc. (NPI 1730431875, Merced, CA); Obhg California, P.C. (NPI 1215258892, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Des Moines University Of Osteopathic Medicine And Health Sciences, class of 2012
## Record status
- **NPPES last updated:** October 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1841555109) · Data from the CMS NPPES public registry.