DR. MICHAEL THOMAS MACELLARI (DO, CSCS) – Hospitalist Physician, NPI 1043747322
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,302 HOSPITALIST in CA
Provider Addresses for DR. MICHAEL THOMAS MACELLARI (DO, CSCS)
1117 E DEVONSHIRE AVE BLDG SUITE209
HEMET, CA 925433083
Phone: (951) 925-6389
Type: Location
601, 36th Street, Sacramento, Sacramento County, California, 95816, United States
SACRAMENTO, CA 958163915
Phone: (574) 904-1202
Type: Mailing
3400 DATA DR
RANCHO CORDOVA, CA 956707956
Phone:
Type: Mailing
3000 Q ST FL 3
SACRAMENTO, CA 958167058
Phone: (916) 733-3400
Fax: (916) 733-5384
Type: Location
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: 2022-01-18
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 |
|---|---|---|---|---|
| I20220118000424 | I | Hospitalist | 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 |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 283 | 277 | $0 |
| 99291 | Critical care, first 30-74 minutes | 68 | 67 | $0 |
| 99497 | Advance care planning, first 30 minutes | 32 | 31 | $0 |
Insurance plans in this area (ZIP 92543)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | CA | |
| - | CA | |
| Internal Medicine | CA | |
| N E U R O L O G Y | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| Family Practice | CA | |
| Diagnostic Radiology | CA | |
| - | CA |
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