Karen Ross Tammela, MD
Obstetrics & Gynecology · Santa Maria, CA
At a glance
220 S Palisade Dr Ste 203, Santa Maria, CA 93454-8903
NPPES record updated Nov 8, 2023. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
220 S Palisade Dr Ste 203Santa Maria, CA 93454-8903
Additional reported practice locations
625 34Th St Ste 200Bakersfield, CA 933012307
Phone: 8336782781
Fax: 6613680618 625 34Th St Ste 100
Bakersfield, CA 933012307
Phone: 8336782781
Fax: 6613680618 210 S Palisade Dr Ste 101
Santa Maria, CA 934545932
Phone: 8059220481
Fax: 8059255261 217 W Central Ave Ste G
Lompoc, CA 934362830
Phone: 8057354292
Fax: 8057354293
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1997
- CMS specialties
- Obstetrics/Gynecology
Practice groups
Reported hospital affiliations
- Marian Regional Medical Center Santa Maria, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Obstetrics & Gynecology
- Taxonomy code
- 207V00000X
- Enumeration date
- Jul 11, 2006
- Record updated
- Nov 8, 2023
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207V00000X
License reported: 48141 WI
207V00000X · Primary
License reported: C153083 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
220 S Palisade Dr Ste 203Santa Maria, CA 93454-8903
- Phone
- (805) 354-7101
- Fax
- (805) 354-7102
Mailing address
220 S PALISADE DR STE 203SANTA MARIA, CA 934548903
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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