DR. MARY ANN LANGE BISHOP (MD) – Nephrology Physician, NPI 1609929801
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
345 NEPHROLOGY in MD
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Provider Addresses for DR. MARY ANN LANGE BISHOP (MD)
9808 LOG HOUSE CT
GAITHERSBURG, MD 208822704
Phone: (301) 540-3555
Type: Mailing
1, Metropolitan Court, Metropolitan Grove, Gaithersburg, Montgomery County, Maryland, 20878, United States
GAITHERSBURG, MD 208784016
Phone: (240) 773-0300
Type: Location
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: 2022-07-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 3 Medicare enrollment records; no due dates published yet.
Enrollment records
3
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 |
|---|---|---|---|---|
| I20151016000089 | I | Nephrology | MD | TBD |
| I20200908000306 | I | Nephrology | VA | TBD |
| I20220725001566 | I | Nephrology | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99231 | Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 49 | 30 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 28 | 22 | $0 |
| 90935 | Hemodialysis procedure with physician evaluation | 26 | 19 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 15 | $0 |
Insurance plans in this area (ZIP 20882)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | TN | |
| - | TN | |
| - | TN | |
| - | TN | |
| Certified Registered Nurse Anesthetist (Crna) | SC | |
| General Surgery, Vascular Surgery | SC | |
| - | TN | |
| N E U R O L O G Y | CA | |
| Physician Assistant | SC | |
| Nurse Practitioner | TN |
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