Nastassia Cassandra Sylvestre, MD
Internal Medicine Physician · Santa Barbara, CA
Nastassia Cassandra Sylvestre, MD is an internal medicine physician with a practice address in Santa Barbara, California, and NPI 1649658659, issued on May 11, 2015. Check the license (California C197592, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nastassia Cassandra Sylvestre
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C197592 CA
036157419 IL
4301107039 MI
Self-reported in NPPES; status is on the state search - Practice location
- 400 W Pueblo St, Santa Barbara, CA 93105
- Phone
- (805) 682-7111
- Enumerated
- May 11, 2015
- Record last updated
- Dec 20, 2024
- Fax
- (805) 749-2961
- Medicare enrollment
- Enrolled (PECOS I20240925001673); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 400 W Pueblo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tabitha Abraham, FNPFamily Nurse Practitioner1811558042
- Kristina Abramyan, FNPFamily Nurse Practitioner1114810686
- Tamanna AhluwaliaStudent in an Organized Health Care Education/Training Program1376338384
- Jung Hwa Ahn, MDStudent in an Organized Health Care Education/Training Program1083553572
- Fares Al-Khouja, MDStudent in an Organized Health Care Education/Training Program1497441778
- Sarah Anderson, MDStudent in an Organized Health Care Education/Training Program1154172872
Verify Nastassia Cassandra Sylvestre in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C197592Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average internal medicine physician in 2024
733 Medicare Part D claims for 99 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium76 claims
- Amlodipine Besylate49 claims
- Losartan Potassium41 claims
- Hydrochlorothiazide33 claims
- Simvastatin26 claims
- Levothyroxine Sodium25 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Cottage Clinical AssociatesSanta Barbara, CA
- Cottage Medical FoundationGoleta, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nastassia Cassandra Sylvestre among 17,696 internal medicine physician records in California
Nastassia Cassandra Sylvestre, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 internal medicine physician records list a practice address in Santa Barbara
They are 129 of the 5,328 NPPES records with a practice address in Santa Barbara, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Barbara → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Dennis Baker, M.DSanta Barbara, CA 931051669419602
- James Barbabella, M.D.Santa Barbara, CA 931051114031598
- Laurel Bliss, MDSanta Barbara, CA 931051154368868
- David Dodson, M.DSanta Barbara, CA 931051619943834
- Patrick Frawley, MDSanta Barbara, CA 931051093707358
- Jeffrey Hadsall, M.D.Santa Barbara, CA 931051275641714
- William Koonce, MDSanta Barbara, CA 931051124010095
- Sandra Kramer, MDSanta Barbara, CA 931051104823418
Common questions
What is Nastassia Cassandra Sylvestre, MD's NPI number?
Nastassia Cassandra Sylvestre, MD's National Provider Identifier (NPI) is 1649658659, issued on May 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nastassia Cassandra Sylvestre, MD located?
The NPPES record lists a practice address at 400 W Pueblo St, Santa Barbara, CA, 93105. Phone: (805) 682-7111. Providers update this record themselves, so call before visiting.
How can I verify Nastassia Cassandra Sylvestre, MD's license?
NPPES lists California license number C197592, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nastassia Cassandra Sylvestre, MD prescribe under Medicare Part D?
In 2024, Nastassia Cassandra Sylvestre, MD had 733 Medicare Part D claims for 99 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nastassia Cassandra Sylvestre, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.