DR. LINDA ANH BUI NGUYEN (M.D.) – Gastroenterology Physician, NPI 1750303152
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,981 GASTROENTEROLOGY in CA
Provider Addresses for DR. LINDA ANH BUI NGUYEN (M.D.)
500 SUPERIOR AVE STE 100
NEWPORT BEACH, CA 926633660
Phone: (949) 764-7569
Fax: (949) 764-7568
Type: Mailing
300 PASTEUR DR
STANFORD, CA 943052200
Phone: (650) 723-4000
Type: Mailing
Broadway Street, Lamberton, Redwood County, Minnesota, 56152, United States
PAVILLION C, MC 6341
REDWOOD CITY, CA 940633132
Phone: (650) 736-5555
Fax: (650) 498-4338
Type: Mailing
Redwood City, Broadway, Redwood City, San Mateo County, California, 94063, United States
PAVILLION A
REDWOOD CITY, CA 940633132
Phone: (650) 736-5555
Fax: (650) 498-4338
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 49 Open Payments records for all available years, with a total value of $36,675.
Total Amount is formed as General ($36,675) + Research ($0) + Ownership ($0) = $36,675.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: Phathom Pharmaceuticals, Inc. ($16,808).
Total Amount
$36,675
General + Research + Ownership
Payments
49
Total payment records
General Amount
$36,675
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-05
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Phathom Pharmaceuticals, Inc. | $16,808 |
| Enterra Medical, Inc. | $10,498 |
| Ardelyx, Inc. | $5,591 |
| Blueprint Medicines Corporation | $2,696 |
| Vibrant Gastro, Inc. | $251 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2005-09-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20050928001214 | I | Gastroenterology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 195 | 159 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 56 | 48 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 45 | 43 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 29 | 29 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 20 | 20 | $0 |
Insurance plans in this area (ZIP 92663)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Family Practice | CA | |
| Family Practice | VA | |
| General Surgery | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Family Practice | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA |
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