Doctor profile · Federal record
Dr. Katherine Shaffer, M.D.
Student in an Organized Health Care Education/Training Program (CMS: Gastroenterology) · San Diego, CA
- NPI 1336405695
- Accepts Medicare
- 14 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
292 Euclid Ave Ste 115
San Diego, CA 921143629
(619) 266-3332
Credentials & registration
- NPI registered
- April 2012 — 14 yrs on file
- Profile last updated
- October 25, 2024
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 390200000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336405695. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
234
Distinct HCPCS
8
Medicare allowed
$32,496
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 43 | 41 | $109 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 43 | 43 | $115 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 43 | 37 | $90 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 31 | 26 | $127 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 30 | 29 | $260 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 18 | 18 | $185 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 | $134 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 12 | 12 | $171 |
In context: peer comparison
Among 15 peers in this city , average services per provider: 63. This provider delivers 3.7× the peer median.Open Payments
Industry payments received
All-time total
$185
Transactions
9
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, Inc. | 2 | $39.75 | |
| ABBVIE INC. | 2 | $33.36 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $30.04 | |
| PFIZER INC. | 1 | $28.85 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $23.89 | |
| Intercept Pharmaceuticals, Inc. | 1 | $16.34 | |
| AIMMUNE THERAPEUTICS, INC. | 1 | $13.15 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
853
Patients
310
Total drug cost
$164,436
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 326 | 98 | $3,984 |
| Pantoprazole Sodium | Generic | 92 | 26 | $1,844 |
| Linzess (Linaclotide) | Brand | 87 | 17 | $57,760 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 66 | 63 | $1,036 |
| Famotidine | Generic | 64 | 21 | $1,068 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 38 | 33 | $2,958 |
| Dicyclomine Hcl | Generic | 30 | 11 | $376 |
| Loperamide (Loperamide Hcl) | Brand | 30 | 14 | $360 |
| Trulance (Plecanatide) | Brand | 22 | 0 | $12,961 |
| Procto-Med Hc (Hydrocortisone) | Brand | 19 | 0 | $713 |
Hospital affiliations
Frequently asked questions
What is Dr. Katherine Shaffer's medical specialty?
Dr. Katherine Shaffer practices Student in an Organized Health Care Education/Training Program in San Diego, CA.
Where does Dr. Katherine Shaffer practice?
Dr. Katherine Shaffer practices at 292 Euclid Ave Ste 115, San Diego, CA 921143629. Office phone: 6192663332.
What is Dr. Katherine Shaffer's NPI?
Dr. Katherine Shaffer's National Provider Identifier (NPI) is 1336405695, issued by NPPES.
Does Dr. Katherine Shaffer accept Medicare assignment?
Yes. Dr. Katherine Shaffer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katherine Shaffer commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.