DR. OLIVIA ALLISON PHIFER-COMBS (M.D.) – Obstetrics & Gynecology Physician, NPI 1366852923
Obstetrics & Gynecology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
1,734 OBSTETRICS/GYNECOLOGY in MI
Provider Addresses for DR. OLIVIA ALLISON PHIFER-COMBS (M.D.)
926 N MICHIGAN AVE
SAGINAW, MI 486024323
Phone: (989) 753-8453
Fax: (989) 755-9983
Type: Mailing
1000 HOUGHTON AVE
SAGINAW, MI 486025303
Phone:
Type: Mailing
975 N Main St Ste L
Frankenmuth, MI 487341104
Phone: (989) 753-8453
Type: Location
117 S Main St Ste A
Freeland, MI 486238935
Phone: (989) 753-8453
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 31 Open Payments records for all available years, with a total value of $586.
Total Amount is formed as General ($586) + Research ($0) + Ownership ($0) = $586.
Last reported payment date: 2024-11-20 • Largest payer in this snapshot: ABBVIE INC. ($143).
Total Amount
$586
General + Research + Ownership
Payments
31
Total payment records
General Amount
$586
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $143 |
| Astellas Pharma US Inc | $134 |
| Biogen, Inc. | $54 |
| PFIZER INC. | $44 |
| CooperSurgical, Inc. | $34 |
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: 2018-07-16
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 |
|---|---|---|---|---|
| I20180716000129 | I | Obstetrics/Gynecology | MI | 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 | 45 | 29 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 40 | 25 | $0 |
| G0101 | Cervical or vaginal cancer screening; pelvic and clinical breast examination | 14 | 14 | $0 |
Insurance plans in this area (ZIP 48602)
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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 | MI | |
| Obstetrics/Gynecology, Family Practice | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| Obstetrics/Gynecology, Family Practice, Osteopathic Manipulative Medicine | MI | |
| - | MI | |
| - | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI |
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