SERENA H CHAO (M.D.) – Internal Medicine Physician, NPI 1053375840
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
223 GERIATRIC MEDICINE in MA
Provider Addresses for SERENA H CHAO (M.D.)
1493 Cambridge St
Cambridge, MA 021391099
Phone: (617) 665-3100
Type: Location
1 MEDICAL CENTER DR # 1000
LEBANON, NH 037560001
Phone: (603) 650-5000
Type: Mailing
CHA Everett Hospital, 103, Garland Street, Glendale, Everett, Middlesex County, Massachusetts, 02149, United States
EVERETT, MA 021495066
Phone: (617) 394-7703
Type: Mailing
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.
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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: 2025-04-30
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 |
|---|---|---|---|---|
| I20040807000035 | I | Geriatric Medicine | MA | TBD |
| I20250430003199 | I | Geriatric Medicine | NH | 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 |
|---|---|---|---|---|
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 110 | 57 | $0 |
| G0179 | Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 73 | 35 | $0 |
| 99349 | Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | 25 | 20 | $0 |
| 99308 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 16 | 12 | $0 |
| 99310 | Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 02139)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MA | |
| - | MA | |
| - | NH | |
| Rheumatology, Internal Medicine | MA | |
| - | MA | |
| Emergency Medicine | MA | |
| Family Practice | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | PA | |
| Emergency Medicine | MA | |
| Physician Assistant | MA |
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