DR. MARY NEWKIRK (M.D.) – Family Medicine Physician, NPI 1124088323
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
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Provider Addresses for DR. MARY NEWKIRK (M.D.)
Stockton Post Office, 401, North San Joaquin Street, Stockton, San Joaquin County, California, 95202, United States
STOCKTON, CA 952670096
Phone: (209) 956-7725
Fax: (209) 956-7733
Type: Mailing
10, Woodland Road, Saint Helena Parish, Louisiana, 70422, United States
SAINT HELENA, CA 945749554
Phone: (707) 963-6399
Fax: (707) 967-5915
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 $178.
Total Amount is formed as General ($178) + Research ($0) + Ownership ($0) = $178.
Last reported payment date: 2024-02-07 • Largest payer in this snapshot: ABBVIE INC. ($54).
Total Amount
$178
General + Research + Ownership
Payments
7
Total payment records
General Amount
$178
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-07
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2009-12-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050414001001 | I | Hospitalist | CA | TBD |
| I20091216000619 | I | Internal Medicine | HI | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 111 | 43 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 56 | 27 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 28 | 28 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 95267)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| - | CA | |
| Family Practice | HI | |
| Family Practice | CA | |
| Hospitalist, Internal Medicine | CA | |
| - | CA | |
| Internal Medicine | WA | |
| Hospitalist, Internal Medicine | CA |
Reviews
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