Christopher A. Chaffin, PA
Physician Assistant · Springfield, MO
Christopher A. Chaffin, PA is a physician assistant with a practice address in Springfield, Missouri, and NPI 1104129436, issued on Dec 8, 2010. Check the license (Missouri 2011001602, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christopher A. Chaffin
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2011001602 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1965 S Fremont Ave, Springfield, MO 65804
- Phone
- (417) 820-3800
- Enumerated
- Dec 8, 2010
- Record last updated
- Feb 3, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (417) 829-3810
- Medicare enrollment
- Enrolled (PECOS I20110211000953); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 1965 S Fremont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rajamanikkam Anandarajah, MDInternal Medicine Physician1962560953
- Michael Ashley, MDSurgery Physician1225105638
- Lyndsey BakerNurse Practitioner1891623203
- Donald Balun, MDPsychiatry Physician1255387577
- Tyler Barnes, PA-CPhysician Assistant1477850964
- Inna Bates, FNP-CFamily Nurse Practitioner1588055578
Verify Christopher A. Chaffin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2011001602Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average physician assistant in 2024
386 Medicare Part D claims for 142 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 30 claims were for opioids.
Most prescribed
- Pantoprazole Sodium89 claims
- Famotidine58 claims
- Ondansetron Hcl56 claims
- Hydrocodone-Acetaminophen29 claims
- Sucralfate20 claims
- Ondansetron Odt19 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.
Industry payments in 2024: $756.61
18 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Mercy Clinic Springfield CommunitiesSpringfield, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher A. Chaffin among 1,790 physician assistant records in Missouri
Christopher A. Chaffin, PA is one of 1,790 physician assistant records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 23% of them.
- NPI issued2010 · 23% of these records are older, 75% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2010 · median 2019 among the 1,250 with a school on file
- Record last updated2011 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
234 physician assistant records list a practice address in Springfield
They are 234 of the 6,403 NPPES records with a practice address in Springfield, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Springfield → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lea Bailey, PA-CSpringfield, MO 658041437149903
- Micah Brothers, PA-CSpringfield, MO 658041477692572
- Dean Carlson, P.A.Springfield, MO 658041104862861
- Brian Davis, PA-CSpringfield, MO 658041790891851
- Todd Dean, PA-CSpringfield, MO 658041629117361
- Patricia Duggan, PA-CSpringfield, MO 658041851471676
- James Eden, PA-CSpringfield, MO 658041093883167
- Jason Glenn, P.A.Springfield, MO 658041962420547
Common questions
What is Christopher A. Chaffin, PA's NPI number?
Christopher A. Chaffin, PA's National Provider Identifier (NPI) is 1104129436, issued on Dec 8, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Christopher A. Chaffin, PA located?
The NPPES record lists a practice address at 1965 S Fremont Ave, Springfield, MO, 65804. Phone: (417) 820-3800. Providers update this record themselves, so call before visiting.
How can I verify Christopher A. Chaffin, PA's license?
NPPES lists Missouri license number 2011001602, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Christopher A. Chaffin, PA prescribe under Medicare Part D?
In 2024, Christopher A. Chaffin, PA had 386 Medicare Part D claims for 142 beneficiaries; the average among physician assistant prescribers was 830. 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.