Mark E. Reader, D.O.
Otolaryngology Physician · Porterville, CA
Mark E. Reader, D.O. is an otolaryngology physician with a practice address in Porterville, California, and NPI 1649363334, issued on Oct 2, 2006. Check the license (California 20A8888, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark E. Reader
- Credential
- D.O.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- 20A8888 CA
Self-reported in NPPES; status is on the state search - Practice location
- 590 W Putnam Ave, Porterville, CA 93257
- Phone
- (559) 781-3700
- Enumerated
- Oct 2, 2006
- Record last updated
- Nov 12, 2025
- Medicaid ID
- 00AX88880 CA
- Medicare enrollment
- Enrolled (PECOS I20050810001011); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1987
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Also registered at 590 W Putnam Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lareina Adams, DNPFamily Nurse Practitioner1366863888
- Juan Alarcon Medina, PA-CPhysician Assistant1720727225
- Mona Attalla, P.A.Physician Assistant1073633301
- Clarissa AvalosNurse Practitioner1922947860
- Ana BorbaFamily Nurse Practitioner1649673559
- Teri Brown, M.D.Pediatrics Physician1184761363
Verify Mark E. Reader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8888Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average otolaryngology physician in 2024
629 Medicare Part D claims for 261 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 53 claims were for opioids.
Most prescribed
- Fluticasone Propionate128 claims
- Azelastine Hcl101 claims
- Ipratropium Bromide80 claims
- Ofloxacin44 claims
- Cephalexin43 claims
- Hydrocodone-Acetaminophen34 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): 81.8 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).
Industry payments in 2024: $128.91
1 payment: food and beverage; the largest payer was Oticon Medical, LLC. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sequoia Healthcare AlliancePorterville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark E. Reader among 1,212 otolaryngology physician records in California
Mark E. Reader, D.O. is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1987 · median 2004 among the 818 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Porterville → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Dale Cox, M.D.Porterville, CA 932571073545497
- Lonnie Smith, M.D.Tulare, CA 932741992817936
- Scott Price, MDVisalia, CA 932771275633851
- Mike Shin, MDHanford, CA 932301992791495
- Thomas Akin, M.D.Visalia, CA 932911730451121
- Craig Calloway, M.D.Visalia, CA 932911154327153
- Lyle Stillwater, MDVisalia, CA 932911154339182
- Ali Aghamohammadi, MDBakersfield, CA 933011033183157
Common questions
What is Mark E. Reader, D.O.'s NPI number?
Mark E. Reader, D.O.'s National Provider Identifier (NPI) is 1649363334, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Reader, D.O. located?
The NPPES record lists a practice address at 590 W Putnam Ave, Porterville, CA, 93257. Phone: (559) 781-3700. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Reader, D.O.'s license?
NPPES lists California license number 20A8888, 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 Mark E. Reader, D.O. prescribe under Medicare Part D?
In 2024, Mark E. Reader, D.O. had 629 Medicare Part D claims for 261 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Mark E. Reader, D.O.'s MIPS final score?
The 2023 MIPS final score is 81.8 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.