Christopher A Chaffin , PA
Physician Assistant • Springfield, MO
1965 S Fremont Ave, Suite 100
Springfield, MO 658042201
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Christopher Chaffin is listed in NPPES under Physician Assistant.
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NPI assigned on December 8, 2010; this date does not establish years in practice.
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Published CMS data list 111 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 46 service units.
- 47562 — Removal of gallbladder using an endoscope: 24 service units.
- 49650 — Repair of groin hernia using an endoscope: 17 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 282 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Pantoprazole Sodium — 89 prescription fills, including refills.
- Famotidine — 58 prescription fills, including refills.
- Ondansetron Hcl — 56 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Physician Assistant in Springfield, MO (2024, 135 clinicians with data). Median for this group: 241. Middle half: 103 to 553.
Fewer Medicare Part B services than 70% of clinicians listed under Physician Assistant in Missouri (2024, 944 clinicians with data). Median for this group: 229. Middle half: 96 to 567.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 115 in 2020 to 111 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1965 S Fremont Ave
Suite 100
Springfield, MO 658042201
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Mercy Clinic Springfield Communities. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2010
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
129 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $11,194 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $8,606 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
367 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$5,462 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $72.31 across 4 records.
By nature of payment
- Food and Beverage: $72.31 across 4 records.
Reporting-company totals
- Eli Lilly and Company: $49.89 across 3 records.
- VERTEX PHARMACEUTICALS INCORPORATED: $22.42 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2010
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Christopher Chaffin has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Christopher Chaffin as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Springfield and Missouri
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 65% of clinicians listed under Physician Assistant in Springfield, MO (2024, 135 clinicians with data). Median for this group: 241. Middle half: 103 to 553.
Fewer Medicare Part B services than 70% of clinicians listed under Physician Assistant in Missouri (2024, 944 clinicians with data). Median for this group: 229. Middle half: 96 to 567.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Springfield, MO (2024, 135 clinicians with data). Median for this group: $15,991. Middle half: $5,876 to $30,846.
A lower Medicare-allowed amount than 60% of clinicians listed under Physician Assistant in Missouri (2024, 944 clinicians with data). Median for this group: $16,486. Middle half: $7,632 to $33,529.
Paid by Medicare
Close to the middle for clinicians listed under Physician Assistant in Springfield, MO (2024, 135 clinicians with data). Median for this group: $12,105. Middle half: $4,297 to $21,178.
A lower Medicare payment amount than 60% of clinicians listed under Physician Assistant in Missouri (2024, 944 clinicians with data). Median for this group: $12,171. Middle half: $5,565 to $25,556.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Springfield, MO (2024, 124 clinicians with data). Median for this group: 295. Middle half: 68 to 923.
Close to the middle for clinicians listed under Physician Assistant in Missouri (2024, 900 clinicians with data). Median for this group: 219. Middle half: 73 to 682.
Part D drug cost
Close to the middle for clinicians listed under Physician Assistant in Springfield, MO (2024, 124 clinicians with data). Median for this group: $5,369. Middle half: $553 to $67,984.
Close to the middle for clinicians listed under Physician Assistant in Missouri (2024, 900 clinicians with data). Median for this group: $2,647. Middle half: $562 to $57,833.
234 active clinicians are listed under Physician Assistant with a practice address in Springfield, MO (1,791 in Missouri).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
12% of these 234 clinicians have the CMS telehealth indicator.
73.1% of these 234 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services varied from year to year: 115 in 2020 and 111 in 2024.
- 2020: 115
- 2021: 111
- 2022: 75
- 2023: 135
- 2024: 111
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $12,266 in 2020 and $11,194 in 2024.
- 2020: $12,266
- 2021: $13,064
- 2022: $9,509
- 2023: $15,454
- 2024: $11,194
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Paid by Medicare
Paid by Medicare decreased 10% from $9,584 in 2020 to $8,606 in 2024.
- 2020: $9,584
- 2021: $10,313
- 2022: $7,466
- 2023: $11,793
- 2024: $8,606
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 166% from 106 in 2020 to 282 in 2024.
- 2020: 106
- 2021: 163
- 2022: 129
- 2023: 122
- 2024: 282
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30-day fills
30-day fills increased 228% from 112 in 2020 to 367 in 2024.
- 2020: 112
- 2021: 185
- 2022: 152
- 2023: 168
- 2024: 367
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Part D drug cost
Part D drug cost increased 441% from $1,011 in 2020 to $5,462 in 2024.
- 2020: $1,011
- 2021: $3,698
- 2022: $1,482
- 2023: $1,829
- 2024: $5,462
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $242.55 in 2021 to $72.31 in 2025.
- 2021: $242.55
- 2022: $421.47
- 2023: $1,045.17
- 2024: $816.79
- 2025: $72.31
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $72.31.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
|
JOURNAVX | General | $22.42 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
ZEPBOUND | General | $17.31 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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ZEPBOUND | General | $16.29 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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ZEPBOUND | General | $16.29 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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46 | 34 | $132.00 | $70.57 |
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47562
Removal of gallbladder using an endoscope
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24 | 24 | $625.80 | $83.92 |
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49650
Repair of groin hernia using an endoscope
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17 | 17 | $666.86 | $62.78 |
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43281
Repair of hernia of muscle at esophagus and stomach using an endoscope
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13 | 13 | $1760.70 | $194.96 |
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43644
Bypass of stomach using an endoscope
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11 | 11 | $1685.70 | $211.98 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Pantoprazole Sodium | Pantoprazole Sodium | 89 | 3,690 | $676.68 | 29 |
| Famotidine | Famotidine | 58 | 3,074 | $868.02 | 28 |
| Ondansetron Hcl | Ondansetron Hcl | 56 | 549 | $480.46 | 33 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 29 | 129 | $272.47 | 27 |
| Sucralfate | Sucralfate | 20 | 699 | $2,731.98 | — |
| Ondansetron Odt | Ondansetron | 19 | 230 | $349.75 | 11 |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 11 | 81 | $82.85 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20110211000953
MO
7416137179
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Mercy Clinic Springfield Communities
1229 E Seminole St, Springfield, MO 658042227
Mercy Clinic Springfield Communities
1235 E Cherokee St, Springfield, MO 658042203
Mercy Clinic Springfield Communities
1229 E Seminole, Springfield, MO 658042227
Phone: 4178886711
Mercy Clinic Springfield Communities
1965 S Fremont Ave, Springfield, MO 658042299
Phone: 4178203800
Mercy Clinic Springfield Communities
1605 Martin Springs Dr, Rolla, MO 654012980
Mercy Clinic Springfield Communities
1229 E Seminole St Fl, Springfield, MO 658042227
Phone: 4178202064
Mercy Clinic Springfield Communities
2115 S Fremont Ave, Springfield, MO 658042236
Phone: 4178203905
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Registered Nurse
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Medicine (M.D.)
Surgery
Doctor of Osteopathic Medicine (D.O.)
Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated December 08, 2010.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Springfield
- Anna Biernbaum, PA
- Clayton Enlow, PA-C
- Chase Thompson, PA-C
- Andria Gibb, PA-C
- Joshua Lottmann, PA-C
- Jodie Tucker, PA
Mailing Address
Po Box 2580
Springfield, MO 658012580
Phone: 4178294620