BARRY STEVEN ALLSWANG (MD) – Internal Medicine Physician, NPI 1720016397
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for BARRY STEVEN ALLSWANG (MD)
Katella Avenue, Los Alamitos, Orange County, California, 90702, United States
SUITE 330
LOS ALAMITOS, CA 907203338
Phone:
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $77.
Total Amount is formed as General ($77) + Research ($0) + Ownership ($0) = $77.
Last reported payment date: 2023-09-13 • Largest payer in this snapshot: LINUS HEALTH, INC. ($29).
Total Amount
$77
General + Research + Ownership
Payments
3
Total payment records
General Amount
$77
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| LINUS HEALTH, INC. | $29 |
| Otsuka America Pharmaceutical, Inc. | $24 |
| Novo Nordisk Inc | $24 |
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: 2010-04-29
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 |
|---|---|---|---|---|
| I20100429000767 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 776 | 146 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 78 | 43 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 75 | 68 | $0 |
| 99457 | Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 66 | 14 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 59 | 58 | $0 |
Insurance plans in this area (ZIP 90720)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Critical Care (Intensivists), Emergency Medicine, Internal Medicine | MO | |
| E N D O C R I N O L O G Y | CA | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| - | CA | |
| - | CA | |
| Internal Medicine | CA | |
| Vascular Surgery | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | CA |
Reviews
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