Doctor profile · Federal record

Dr. Blaithin McMahon, MD PH,D.

Nephrology Physician (CMS: Nephrology) · Nephrology Physician · Charleston, SC

  • NPI 1922395037
  • Accepts Medicare
  • 20 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
171 Ashley Ave
Charleston, SC 294250005
(843) 792-1414
Mailing address
Po Box 751461
Charlotte, NC 282751461

Credentials & registration

NPPES · NUCC
NPI registered
July 2011 — 15 yrs on file
Profile last updated
October 9, 2018
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
207RN0300X — NUCC code
State licenses (2)
South Carolina #81550 · Maryland #D81328

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1922395037. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
328
Distinct HCPCS
8
Medicare allowed
$33,025
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 102 47 $111
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 90 52 $75
99214 Established patient office or other outpatient visit, 30-39 minutes 36 29 $92
99214 Established patient office or other outpatient visit, 30-39 minutes 31 26 $120
90935 Hemodialysis procedure with physician evaluation 26 20 $68
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 16 16 $165
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 14 13 $124
99215 Established patient office or other outpatient visit, 40-54 minutes 13 13 $136

In context: peer comparison

Among 17 peers in this city , average services per provider: 107. This provider delivers 3.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$1,608
Transactions
10
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Baxter Healthcare 10 $1,607.65

By nature of payment

Travel and Lodging
$1,014
Food and Beverage
$594

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
161
Patients
0
Total drug cost
$8,718
Drug Type Claims Patients Total cost
Losartan Potassium Generic 33 0 $393
Furosemide Generic 22 0 $153
Tamsulosin Hcl Generic 22 0 $246
Calcitriol Generic 20 0 $400
Amlodipine Besylate Generic 15 0 $362
Vitamin D2 (Ergocalciferol (Vitamin D2)) Brand 14 0 $81
Isosorbide Mononitrate Er (Isosorbide Mononitrate) Brand 12 0 $95
Jardiance (Empagliflozin) Brand 12 0 $6,716
Potassium Chloride Generic 11 0 $272

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Blaithin McMahon's medical specialty?
Dr. Blaithin McMahon practices Nephrology Physician in Charleston, SC.
Where does Dr. Blaithin McMahon practice?
Dr. Blaithin McMahon practices at 171 Ashley Ave, Charleston, SC 294250005. Office phone: 8437921414.
What is Dr. Blaithin McMahon's NPI?
Dr. Blaithin McMahon's National Provider Identifier (NPI) is 1922395037, issued by NPPES.
Does Dr. Blaithin McMahon accept Medicare assignment?
Yes. Dr. Blaithin McMahon accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Blaithin McMahon commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.