SARAH BROOKE FLEISIG (M.D.) – Hematology & Oncology Physician, NPI 1275827941
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
210 HEMATOLOGY/ONCOLOGY in CT
Provider Addresses for SARAH BROOKE FLEISIG (M.D.)
201 N Mountain Rd Ste 202
Plainville, CT 060621848
Phone: (860) 224-4408
Fax: (860) 827-3428
Type: Location
27035 Maiden Moor Ln
Yorba Linda, CA 928874226
Phone: (714) 290-4050
Type: Location
75 Pringle Way Ste 801
Reno, NV 895028400
Phone: (775) 982-2820
Fax: (775) 982-2821
Type: Location
1100 TRANCAS ST STE 256
NAPA, CA 945582921
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $40.
Total Amount is formed as General ($40) + Research ($0) + Ownership ($0) = $40.
Last reported payment date: 2024-01-22 • Largest payer in this snapshot: Tempus AI, Inc ($28).
Total Amount
$40
General + Research + Ownership
Payments
2
Total payment records
General Amount
$40
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Tempus AI, Inc | $28 |
| PFIZER INC. | $13 |
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: 2018-09-25
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 |
|---|---|---|---|---|
| I20180925000928 | I | Hematology/Oncology | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 46 | 22 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 22 | 21 | $0 |
Insurance plans in this area (ZIP 06062)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Marriage And Family Therapist | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| O P H T H A L M O L O G Y | CA | |
| Nurse Practitioner | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| O P H T H A L M O L O G Y | NY | |
| Physician Assistant | CA | |
| Gastroenterology, Internal Medicine | CA |
Reviews
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