Doctor profile · Federal record
Dr. Michael Loudin, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Berkeley, CA
- NPI 1932542156
- Accepts Medicare
- MIPS 85.7 / 100 · 2023
- 13 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
3100 San Pablo Ave # 420
Berkeley, CA 947022498
(510) 985-5020
fax (510) 985-5282 - Additional location
-
1479 Ygnacio Valley RD # 150
Walnut Creek, CA 945982986
(925) 296-7340 - Additional location
-
2700 Grant St Ste 310
Concord, CA 945202279
(925) 687-9650 - Mailing address
-
1450 Treat Blvd Ste 300
Walnut Creek, CA 945972168
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- March 7, 2023
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A159541
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1932542156. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
505
Distinct HCPCS
10
Medicare allowed
$75,705
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 88 | 88 | $146 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 79 | 53 | $143 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 64 | 42 | $90 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 51 | 51 | $194 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 49 | 48 | $100 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 49 | 47 | $247 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 32 | 32 | $93 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 23 | 22 | $203 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 22 | 22 | $117 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 22 | 17 | $178 |
In context: peer comparison
Among 3 peers in Berkeley Gastroenterology Physician, average services per provider: 47. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$2,221
Transactions
64
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 16 | $704.76 | |
| Janssen Biotech, INC. | 22 | $692.07 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 4 | $195.71 | |
| Madrigal Pharmaceuticals | 1 | $141.53 | |
| Takeda Pharmaceuticals U.S.A., INC. | 5 | $97.66 | |
| Lilly USA, LLC | 3 | $96.69 | |
| Pfizer INC. | 3 | $68.06 | |
| Ipsen Biopharmaceuticals, INC | 2 | $39.84 | |
| Celltrion USA INC. | 2 | $38.77 | |
| Edwards Lifesciences Corporation | 1 | $26.93 | |
| Philips North America LLC | 1 | $25.90 | |
| Merck Sharp & Dohme LLC | 1 | $24.54 | |
| Celgene Corporation | 1 | $20.75 | |
| Ferring Pharmaceuticals INC. | 1 | $19.22 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $14.88 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
316
Patients
111
Total drug cost
$10,130
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 54 | 18 | $1,081 |
| Omeprazole | Generic | 51 | 21 | $1,119 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 48 | 48 | $3,675 |
| Nortriptyline Hcl | Generic | 34 | 0 | $548 |
| Spironolactone | Generic | 30 | 0 | $724 |
| Pantoprazole Sodium | Generic | 26 | 0 | $420 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 25 | 24 | $435 |
| Furosemide | Generic | 24 | 0 | $96 |
| Budesonide Dr (Budesonide) | Brand | 12 | 0 | $1,637 |
| Ondansetron Odt (Ondansetron) | Brand | 12 | 0 | $394 |
Hospital affiliations
Frequently asked questions
What is Dr. Michael Loudin's medical specialty?
Dr. Michael Loudin practices Gastroenterology Physician in Berkeley, CA.
Where does Dr. Michael Loudin practice?
Dr. Michael Loudin practices at 3100 San Pablo Ave # 420, Berkeley, CA 947022498. Office phone: 5109855020.
What is Dr. Michael Loudin's NPI?
Dr. Michael Loudin's National Provider Identifier (NPI) is 1932542156, issued by NPPES.
Does Dr. Michael Loudin accept Medicare assignment?
Yes. Dr. Michael Loudin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Loudin commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.