Doctor profile · Federal record
Dr. Charles Longo, M.D.
Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Sioux Falls, SD
- NPI 1841266608
- Accepts Medicare
- 28 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1315 S. Cliff Ave, Ste 3000
Sioux Falls, SD 571051061
(605) 322-7600
fax (605) 322-7601 - Mailing address
-
2400 S Minnesota Ave, Ste 100
Sioux Falls, SD 571053762
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- December 13, 2013
- Year of graduation
- 1998 — 28 yrs since
- Specialty taxonomy
- 207RE0101X — NUCC code
- State license (1)
- South Dakota #5192
- Medicaid (4)
- NE #46022474351 · IA #0574087 · MN #028917500 · SD #6004720
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1841266608. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
845
Distinct HCPCS
10
Medicare allowed
$74,069
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 225 | 162 | $93 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 224 | 142 | $137 | |
95251 |
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 160 | 84 | $33 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 125 | 111 | $63 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 34 | 15 | $47 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 26 | 12 | $75 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 15 | 14 | $63 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 13 | 13 | $172 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 12 | 11 | $126 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 11 | 11 | $96 |
In context: peer comparison
Among 8 peers in Sioux Falls Endocrinology, Diabetes & Metabolism Physician, average services per provider: 91. This provider delivers 9.3× the peer median.Open Payments
Industry payments received
All-time total
$68
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, INC. | 2 | $27.39 | |
| Dexcom, INC. | 1 | $22.70 | |
| Amgen INC. | 1 | $18.10 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,923
Patients
353
Total drug cost
$682,398
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 511 | 102 | $6,593 |
| Ozempic (Semaglutide) | Brand | 268 | 38 | $292,283 |
| Metformin Hcl | Generic | 204 | 32 | $1,565 |
| Synthroid (Levothyroxine Sodium) | Brand | 143 | 27 | $13,272 |
| Novolog (Insulin Aspart) | Brand | 125 | 26 | $77,099 |
| Novolog Flexpen (Insulin Aspart) | Brand | 107 | 32 | $120,659 |
| Methimazole | Generic | 79 | 15 | $650 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 70 | 15 | $706 |
| Rosuvastatin Calcium | Generic | 67 | 13 | $780 |
| Lantus Solostar (Insulin Glargine,Hum.Rec.Anlog) | Brand | 63 | 15 | $49,819 |
Hospital affiliations
Frequently asked questions
What is Dr. Charles Longo's medical specialty?
Dr. Charles Longo practices Endocrinology, Diabetes & Metabolism Physician in Sioux Falls, SD.
Where does Dr. Charles Longo practice?
Dr. Charles Longo practices at 1315 S. Cliff Ave, Sioux Falls, SD 571051061. Office phone: 6053227600.
What is Dr. Charles Longo's NPI?
Dr. Charles Longo's National Provider Identifier (NPI) is 1841266608, issued by NPPES.
Does Dr. Charles Longo accept Medicare assignment?
Yes. Dr. Charles Longo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Longo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (HCPCS 95251). Source: CMS Medicare Physician & Other Practitioners file.