Inna Spier, MD
Internal Medicine Physician · Campbell, CA
Inna Spier, MD is an internal medicine physician with a practice address in Campbell, California, and NPI 1922170745, issued on Nov 15, 2006. Check the license (California A51313, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Inna Spier
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A51313 CA
Self-reported in NPPES; status is on the state search - Practice location
- 220 E Hacienda Ave, Campbell, CA 95008
- Phone
- (408) 236-6400
- Enumerated
- Nov 15, 2006
- Record last updated
- Jan 18, 2022
- Medicaid ID
- 00A513130 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 220 E Hacienda Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Inna Spier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A51313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
27 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 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.
Inna Spier among 17,696 internal medicine physician records in California
Inna Spier, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2022 · 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).
25 internal medicine physician records list a practice address in Campbell
They are 25 of the 1,821 NPPES records with a practice address in Campbell, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Campbell → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sameer Awsare, MDCampbell, CA 950081598842437
- Sailaja Bommakanti, M.D.Campbell, CA 950081194828285
- Lily Boris, M.D.Campbell, CA 950081801988977
- Debra Fetters, MDCampbell, CA 950081689751547
- Andrew Hwang, MDCampbell, CA 950081679650535
- Aradhana Kar, MDCampbell, CA 950081447358692
- James Kastelman, MDCampbell, CA 950081730266677
- Rupinder Kaur, MDCampbell, CA 950081386721231
Common questions
What is Inna Spier, MD's NPI number?
Inna Spier, MD's National Provider Identifier (NPI) is 1922170745, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Inna Spier, MD located?
The NPPES record lists a practice address at 220 E Hacienda Ave, Campbell, CA, 95008. Phone: (408) 236-6400. Providers update this record themselves, so call before visiting.
How can I verify Inna Spier, MD's license?
NPPES lists California license number A51313, 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 Inna Spier, MD prescribe under Medicare Part D?
In 2024, Inna Spier, MD had 27 Medicare Part D claims for 23 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.