CLAIRE JOANNA HARTUNG (MD) – Family Medicine Physician, NPI 1336679661
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,194 FAMILY PRACTICE in CA
Provider Addresses for CLAIRE JOANNA HARTUNG (MD)
4590A REDWOOD RETREAT RD
GILROY, CA 950208813
Phone: (610) 513-5932
Type: Mailing
350 Hawthorne Ave Ste 2308
Oakland, CA 946093108
Phone: (510) 869-6883
Fax: (510) 869-6888
Type: Location
Contra Costa Regional Medical Center, 2500, Alhambra Avenue, Martinez, Contra Costa County, California, 94553, United States
MARTINEZ, CA 945533156
Phone: (925) 370-5200
Type: Mailing
1440 CEDAR ST
MARTINEZ, CA 945531929
Phone: (610) 513-5932
Type: Mailing
260 HOSPITAL DR
UKIAH, CA 954824568
Phone: (707) 463-7495
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $125.
Total Amount is formed as General ($125) + Research ($0) + Ownership ($0) = $125.
Last reported payment date: 2024-01-25 • Largest payer in this snapshot: ABBVIE INC. ($125).
Total Amount
$125
General + Research + Ownership
Payments
1
Total payment records
General Amount
$125
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-25
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $125 |
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: 2021-11-29
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 |
|---|---|---|---|---|
| I20211129001361 | I | Family Practice | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 94 | 53 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 50 | 50 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 47 | 30 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 24 | 24 | $0 |
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 16 | 11 | $0 |
Insurance plans in this area (ZIP 95020)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | CA | |
| Family Practice | CA | |
| Marriage And Family Therapist | CA | |
| - | CA | |
| Interventional Pain Management, Family Practice | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| C H I R O P R A C T I C | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Family Practice, Geriatric Medicine | CA |
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