NPPES file of Aug 9, 2026

Robert R. So, M.D.

General Practice Physician · Walton, KY

Robert R. So, M.D. is a general practice physician with a practice address in Walton, Kentucky, and NPI 1609028117, issued on Oct 15, 2008. Check the license (Kentucky 42021, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1609028117
Name
Robert R. So
Credential
M.D.
Primary taxonomy
General Practice Physician 208D00000X
License number
42021 KY
Self-reported in NPPES; status is on the state search
Practice location
625 Chestnut Dr Ste 106, Walton, KY 41094
Phone
(859) 485-7900
Enumerated
Oct 15, 2008
Record last updated
Mar 5, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(859) 485-7920
Medicare enrollment
Enrolled (PECOS I20120423000243); may accept 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 625 Chestnut Dr Ste 106

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

  1. Francine Mosley, M.D., MAEDGeneral Practice Physician1215952544

Verify Robert R. So in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersKentucky Board of Medical Licensure
    Search for license 42021
    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
Open the Kentucky license search

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90% fewer Medicare Part D claims than the average general practice physician in 2024

294 Medicare Part D claims for 171 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Robert So294
  2. Specialty average3,030

Most prescribed

  1. Sulfamethoxazole-Trimethoprim48 claims
  2. Methylprednisolone40 claims
  3. Clarithromycin21 claims
  4. Amoxicillin-Clavulanate Potass19 claims
  5. Albuterol Sulfate Hfa15 claims
  6. Mupirocin14 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: $28.14

2 payments; by number, the most common kind was food and beverage; the largest payer was Medline Industries LP. The 4,259 providers of this specialty with any payment received $1,273.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert So$28.14
  2. Specialty average$1,273.40

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. Bluegrass Urgent Care LLCWalton, KY
  2. Buc Independence LLCIndependence, KY
  3. Buc Newport LLCCold Spring, KY

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

2 general practice physician records list a practice address in Walton

They are 2 of the 63 NPPES records with a practice address in Walton, and 121 general practice physician records in Kentucky.

Other general practice physician records in Kentucky

  1. Joshua Akers, DOLouisville, KY1467030593
  2. Muhammad Akhtar, M.D.Ashland, KY1770614398
  3. Jose Alzadon, M.D.Mount Sterling, KY1366612459
  4. Sobia Amjad, M.DLexington, KY1912161357
  5. Alok Amraotkar, MD, MPHLouisville, KY1043866155
  6. Andrew Angel, MDHarrodsburg, KY1003669417
  7. Bonifacio Aranas, MDWarfield, KY1033298641
  8. Cheryl Barnes, M.D.Louisville, KY1114911773
  9. William Barnes, MDSalem, KY1215985148
  10. Shirley Barron, M.D.Richmond, KY1134266364

Common questions

What is Robert R. So, M.D.'s NPI number?

Robert R. So, M.D.'s National Provider Identifier (NPI) is 1609028117, issued on Oct 15, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Robert R. So, M.D. located?

The NPPES record lists a practice address at 625 Chestnut Dr Ste 106, Walton, KY, 41094. Phone: (859) 485-7900. Providers update this record themselves, so call before visiting.

How can I verify Robert R. So, M.D.'s license?

NPPES lists Kentucky license number 42021, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Robert R. So, M.D. prescribe under Medicare Part D?

In 2024, Robert R. So, M.D. had 294 Medicare Part D claims for 171 beneficiaries; the average among general practice physician prescribers was 3,030. 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.