Tammie Kay Arnold, DO
Hospitalist Physician · Arroyo Grande, CA
Tammie Kay Arnold, DO is a hospitalist physician with a practice address in Arroyo Grande, California, and NPI 1669465878, issued on Aug 24, 2005. Check the license (California 20A10023, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tammie Kay Arnold
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 20A10023 CA
20A 10023 CA
34006235 OH
Self-reported in NPPES; status is on the state search - Practice location
- 160 Station Way Unit 1633, Arroyo Grande, CA 93421
- Phone
- (805) 202-8513
- Enumerated
- Aug 24, 2005
- Record last updated
- Apr 13, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (805) 270-4337
- Medicaid ID
- 2042800 OH
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Verify Tammie Kay Arnold in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38.6 times the Medicare Part D claims of the average hospitalist physician in 2024
20,114 Medicare Part D claims for 615 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 221 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,361 claims
- Amlodipine Besylate1,132 claims
- Levothyroxine Sodium1,072 claims
- Lisinopril845 claims
- Tamsulosin Hcl837 claims
- Gabapentin793 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): 82.3 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).
Tammie Kay Arnold among 3,099 hospitalist physician records in California
Tammie Kay Arnold, DO is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2017 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Arroyo Grande → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ann Bollay, MDSan Luis Obispo, CA 934051487610333
- Ashlynn Gordon, D.O.San Luis Obispo, CA 934051255779641
- Olga Grigorieva Olson, M.D. PH.D.San Luis Obispo, CA 934051780046243
- Sarfaraz Mansuri, MDSan Luis Obispo, CA 934051508178088
- Gordon Ryan, MDSan Luis Obispo, CA 934051396824546
- Cindy Su, M.D.San Luis Obispo, CA 934051285088211
- Christopher Walheim, MDSan Luis Obispo, CA 934051326572116
- Julie Gelman, MDSan Luis Obispo, CA 934011962461046
Common questions
What is Tammie Kay Arnold, DO's NPI number?
Tammie Kay Arnold, DO's National Provider Identifier (NPI) is 1669465878, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tammie Kay Arnold, DO located?
The NPPES record lists a practice address at 160 Station Way Unit 1633, Arroyo Grande, CA, 93421. Phone: (805) 202-8513. Providers update this record themselves, so call before visiting.
How can I verify Tammie Kay Arnold, DO's license?
NPPES lists California license number 20A10023, 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 Tammie Kay Arnold, DO prescribe under Medicare Part D?
In 2024, Tammie Kay Arnold, DO had 20,114 Medicare Part D claims for 615 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Tammie Kay Arnold, DO's MIPS final score?
The 2023 MIPS final score is 82.3 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.