MS. ALLEGRA JACQUELINE HAMMAN (CRNP) – Nurse Practitioner, NPI 1104049063
Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,767 NURSE PRACTITIONER in MD
Provider Addresses for MS. ALLEGRA JACQUELINE HAMMAN (CRNP)
10753 FALLS RD
JOHNS HOPKINS AT GREEN SPRING SUITE 315
LUTHERVILLE TIMONIUM, MD 210934535
Phone: (410) 583-2926
Fax: (410) 583-2883
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2020-12-28
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 |
|---|---|---|---|---|
| I20110324000234 | I | Nurse Practitioner | MD | TBD |
| I20201228000125 | I | Nurse Practitioner | DC | 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 | 240 | 203 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 144 | 127 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 40 | 29 | $0 |
| 99496 | Transitional care management services for problem of high complexity | 19 | 19 | $0 |
Insurance plans in this area (ZIP 21093)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | MD | |
| O T O L A R Y N G O L O G Y | TX | |
| Clinical Psychologist | MD | |
| Physician Assistant | MD | |
| Physician Assistant | MD | |
| O P H T H A L M O L O G Y | MD | |
| Pulmonary Disease, Internal Medicine | MD | |
| A N E S T H E S I O L O G Y | MD | |
| - | MD | |
| Emergency Medicine, Internal Medicine | MD |
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