Mitchell Siy, DNP
Nurse Practitioner · Anaheim, CA
Mitchell Siy, DNP is a nurse practitioner with a practice address in Anaheim, California, and NPI 1437829058, issued on Sep 15, 2021. Check the license (California 95018377, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mitchell Siy
- Credential
- DNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 95018377 CA
95026363 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 W LA Palma Ave, Anaheim, CA 92801
- Phone
- (714) 774-1450
- Enumerated
- Sep 15, 2021
- Record last updated
- Nov 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20230419001415); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 1111 W LA Palma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lupita Cervantes RoblesClinical Social Worker1982482717
- Bharat Chauhan, M.D.Infectious Disease Physician1730243759
- Tara Chiazza, LCSWSocial Worker1306056353
Verify Mitchell Siy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95018377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average nurse practitioner in 2024
40 Medicare Part D claims for 28 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Can Emergency Physicians Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mitchell Siy among 8,223 nurse practitioner records in California
Mitchell Siy, DNP is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 71% of them.
- NPI issued2021 · 71% of these records are older, 23% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2021 · median 2017 among the 3,425 with a school on file
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 nurse practitioner records list a practice address in Anaheim
They are 95 of the 9,018 NPPES records with a practice address in Anaheim, and 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in Anaheim → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Donna Do, RNPAnaheim, CA 928011841254489
- Rita Grijalva, RNPAnaheim, CA 928011568423317
- Margaret Guerrero, NPAnaheim, CA 928011790856680
- Amylou Grace Harms, NP-CAnaheim, CA 928011932571759
- Jeniffer Johnson, N.P.Anaheim, CA 928011568651909
- Yen Kim, DNP, FNP, AGNP, BSNAnaheim, CA 928011760852263
- Minami Konishi, NPAnaheim, CA 928011982211769
- Eliana Marquez, NPAnaheim, CA 928011306310750
Common questions
What is Mitchell Siy, DNP's NPI number?
Mitchell Siy, DNP's National Provider Identifier (NPI) is 1437829058, issued on Sep 15, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Siy, DNP located?
The NPPES record lists a practice address at 1111 W LA Palma Ave, Anaheim, CA, 92801. Phone: (714) 774-1450. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Siy, DNP's license?
NPPES lists California license number 95018377, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mitchell Siy, DNP prescribe under Medicare Part D?
In 2024, Mitchell Siy, DNP had 40 Medicare Part D claims for 28 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
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.