DR. NICHOLAS F.H. STIENSTRA (M.D.) – Rheumatology Physician, NPI 1033505581
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
306 RHEUMATOLOGY in MA
Provider Addresses for DR. NICHOLAS F.H. STIENSTRA (M.D.)
725 ALBANY ST
SHAPIRO 5 & 6
BOSTON, MA 021182526
Phone: (617) 414-5951
Fax: (617) 414-9251
Type: Mailing
2 UPPER RAGSDALE DR BLDG A
MONTEREY, CA 939405736
Phone: (831) 333-3040
Fax: (831) 886-3639
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2021-05-04
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 |
|---|---|---|---|---|
| I20210504002624 | I | Rheumatology | 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 | 421 | 228 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 78 | 64 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 78 | 78 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 63 | 63 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 41 | 36 | $0 |
Insurance plans in this area (ZIP 02118)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CA | |
| Physician Assistant | CA | |
| Physician Assistant | CA | |
| Internal Medicine | MD | |
| Internal Medicine | CA | |
| U R O L O G Y | KS | |
| Family Practice | IL | |
| E N D O C R I N O L O G Y | CA | |
| - | AR | |
| Nurse Practitioner | CA |
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