Deena Elwan, M.D.
NPI 1588190227 · Obstetrics & Gynecology Physician · Santa Maria, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Deena Elwan, M.D. is a Obstetrics & Gynecology Physician provider in Santa Maria, CA (NPI 1588190227).
Provider details
- NPI number
- 1588190227
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MDR-#### (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
16 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $101 |
Typical Medicare-allowed amounts for these services range $101–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (3)
- 210 S Palisade Dr Ste 101Santa Maria, CA 93454-5932Phone: (805) 922-0481Fax: (805) 925-5261
- 1319 Punahou St Ste 824Honolulu, HI 96826-1032Phone: (808) 203-6518
- 3288 Moanalua RdHonolulu, HI 96819-1469Phone: (808) 432-7934
Registry dates
- Enumerated
- 2017-05-01
- Last updated
- 2025-01-08
- Certified
- 2025-01-08
Frequently asked questions
- What is Deena Elwan's NPI number?
- Deena Elwan's National Provider Identifier (NPI) is 1588190227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Deena Elwan's specialty?
- Deena Elwan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Deena Elwan located?
- Deena Elwan's practice location on file with NPPES is 220 S Palisade Dr Ste 203, Santa Maria, CA 93454-8903.
- What is Deena Elwan's phone number?
- The practice phone number listed in the NPPES registry for Deena Elwan is (805) 354-7101.
- Does Deena Elwan accept Medicare?
- Deena Elwan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Deena Elwan's NPI active?
- Yes — Deena Elwan's NPI (1588190227) is active in the NPPES registry as of the last update on 2025-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.