NPPES file of Aug 9, 2026

Chalmers Arnold Mills, P.A.

Surgical Physician Assistant · Spartanburg, SC

Chalmers Arnold Mills, P.A. is a surgical physician assistant with a practice address in Spartanburg, South Carolina, and NPI 1730152687, issued on Feb 10, 2006. Check the license (South Carolina A535NS, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1730152687
Name
Chalmers Arnold Mills
Credential
P.A.
Primary taxonomy
Surgical Physician Assistant 363AS0400X
License number
A535NS SC
Self-reported in NPPES; status is on the state search
Practice location
1075 Boiling Springs RD, Spartanburg, SC 29303
Phone
(864) 583-7265
Enumerated
Feb 10, 2006
Record last updated
Jul 13, 2026
Fax
(864) 591-0422
Medicaid ID
0330PA SC
Medicare enrollment
Enrolled (PECOS I20111130000750); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1075 Boiling Springs RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Anna Brown, FNPFamily Nurse Practitioner1114378049
  2. Christopher Chittum, M.D.Neurological Surgery Physician1548286412
  3. Robert Flandry, MDNeurological Surgery Physician1346209210
  4. Jessica Francois, DPTPhysical Therapist1841768330
  5. Julie Justice, FNP-CFamily Nurse Practitioner1023217569
  6. Darwin Keller, M.D.Neurological Surgery Physician1699744300

Verify Chalmers Arnold Mills in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
    Search for license A535NS
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the South Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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61% fewer Medicare Part D claims than the average surgical physician assistant in 2024

120 Medicare Part D claims for 61 beneficiaries, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 57 claims were for opioids.

  1. Chalmers Mills120
  2. Specialty average304

Most prescribed

  1. Oxycodone Hcl28 claims
  2. Methocarbamol26 claims
  3. Hydrocodone-Acetaminophen17 claims
  4. Cyclobenzaprine Hcl16 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 practice group's MIPS final score for 2023 (Medicare payment program): 61 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score51.1
  2. Costout of 100 · 30%25.4
  3. Promoting interoperabilityout of 100 · 25%92.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $73.16

3 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 7,578 providers of this specialty with any payment received $703.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Chalmers Mills$73.16
  2. Specialty average$703.95

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

  1. Carolina Orthopaedic And Neurosurgical AssociatesSpartanburg, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Chalmers Arnold Mills among 295 surgical physician assistant records in South Carolina

Chalmers Arnold Mills, P.A. is one of 295 surgical physician assistant records with a practice address in South Carolina. 85% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 80% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated1998 · median 2016 among the 240 with a school on file
  • Record last updated2026 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Physician Assistant providers in South Carolina

There are 295 surgical physician assistant records in South Carolina.

The 8 surgical physician assistant records with the nearest ZIP codes

  1. Edwina Biron, PACSpartanburg, SC 293031063405199
  2. Crystal Bishop, PASpartanburg, SC 293031326551136
  3. William Boyd, PA-CSpartanburg, SC 293031164858569
  4. Jeffrey Brown, PASpartanburg, SC 293031871556126
  5. Blaine Buchanan, PASpartanburg, SC 293031598132961
  6. Derek Freestone, PACSpartanburg, SC 293031114178654
  7. Charles Harrison, PA-CSpartanburg, SC 293031528079183
  8. Earl Laseter, PASpartanburg, SC 293031316043094

Common questions

What is Chalmers Arnold Mills, P.A.'s NPI number?

Chalmers Arnold Mills, P.A.'s National Provider Identifier (NPI) is 1730152687, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Chalmers Arnold Mills, P.A. located?

The NPPES record lists a practice address at 1075 Boiling Springs RD, Spartanburg, SC, 29303. Phone: (864) 583-7265. Providers update this record themselves, so call before visiting.

How can I verify Chalmers Arnold Mills, P.A.'s license?

NPPES lists South Carolina license number A535NS, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.

How much does Chalmers Arnold Mills, P.A. prescribe under Medicare Part D?

In 2024, Chalmers Arnold Mills, P.A. had 120 Medicare Part D claims for 61 beneficiaries; the average among surgical physician assistant prescribers was 304. Part D covers Medicare prescriptions only.

What is Chalmers Arnold Mills, P.A.'s MIPS final score?

The 2023 MIPS final score is 61 of 100, reported for the practice group. 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.