CHARMIAN D SITTAMBALAM (MD) – Geriatric Medicine (Internal Medicine) Physician, NPI 1013208461
Geriatric Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
183 GERIATRIC MEDICINE in MD
Provider Addresses for CHARMIAN D SITTAMBALAM (MD)
9000 FRANKLIN SQUARE DR
DEPARTMENT OF INTERNAL MEDICINE
BALTIMORE, MD 212373901
Phone: (443) 777-7155
Fax: (443) 777-8877
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)
CMS reports 50 Open Payments records for all available years, with a total value of $1,503.
Total Amount is formed as General ($1,503) + Research ($0) + Ownership ($0) = $1,503.
Last reported payment date: 2024-12-26 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($417).
Total Amount
$1,503
General + Research + Ownership
Payments
50
Total payment records
General Amount
$1,503
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $417 |
| AstraZeneca Pharmaceuticals LP | $335 |
| Dexcom, Inc. | $243 |
| Novo Nordisk Inc | $159 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $94 |
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: 2015-11-23
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 |
|---|---|---|---|---|
| I20151123002557 | I | Geriatric Medicine | MD | 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 | 352 | 165 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 258 | 245 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 47 | 36 | $0 |
Insurance plans in this area (ZIP 21237)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MD | |
| Family Practice | MD | |
| Orthopedic Surgery | MD | |
| Family Practice | MD | |
| Family Practice | MD | |
| Internal Medicine, Geriatric Medicine | MD | |
| Internal Medicine | MD | |
| Internal Medicine | MD | |
| Internal Medicine | MD | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MD |
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