MARK D HENNESSY (M.D.) – Maternal & Fetal Medicine Physician, NPI 1194710467
Maternal & Fetal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
898 OBSTETRICS/GYNECOLOGY in TN
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Provider Addresses for MARK D HENNESSY (M.D.)
1930, Alcoa Highway, Knoxville, Knox County, East Tennessee, Tennessee, 37920, United States
STE 435
KNOXVILLE, TN 379201520
Phone: (865) 305-8888
Fax: (865) 305-7090
Type: Mailing
University of Tennessee Medical Center, 1924, Alcoa Highway, Knoxville, Knox County, East Tennessee, Tennessee, 37920, United States
SUITE 6-SOUTH
KNOXVILLE, TN 379201511
Phone: (865) 305-8888
Fax: (865) 305-2514
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $113.
Total Amount is formed as General ($113) + Research ($0) + Ownership ($0) = $113.
Last reported payment date: 2024-05-20 • Largest payer in this snapshot: Shield Therapeutics Inc ($31).
Total Amount
$113
General + Research + Ownership
Payments
7
Total payment records
General Amount
$113
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-05-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Shield Therapeutics Inc | $31 |
| Organon LLC | $20 |
| Xeris Pharmaceuticals, Inc. | $17 |
| PFIZER INC. | $17 |
| Alexion Pharmaceuticals, Inc. | $14 |
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: 2005-02-23
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 |
|---|---|---|---|---|
| I20050223000140 | I | Obstetrics/Gynecology | TN | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 37920)
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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 | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TN |
Reviews
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