JONATHAN KAY (MD) – Rheumatology Physician, NPI 1699766964
Rheumatology Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
306 RHEUMATOLOGY in MA
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Provider Addresses for JONATHAN KAY (MD)
UMASS Memorial Medical Center University Campus Hospital, 55, Lake Avenue North, Worcester, Worcester County, Massachusetts, 01653, United States
WORCESTER, MA 016550002
Phone: (505) 334-5224
Type: Location
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
BOSTON, MA 022415348
Phone:
Type: Mailing
119 BELMONT ST
WORCESTER, MA 016052903
Phone: (508) 793-6936
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 31 Open Payments records for all available years, with a total value of $57,533.
Total Amount is formed as General ($53,337) + Research ($4,196) + Ownership ($0) = $57,533.
Last reported payment date: 2024-12-06 • Largest payer in this snapshot: Samsung Bioepis Co., Ltd. ($16,364).
Total Amount
$57,533
General + Research + Ownership
Payments
31
Total payment records
General Amount
$53,337
General payments
Research Amount
$4,196
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Samsung Bioepis Co., Ltd. | $16,364 |
| UCB, Inc. | $13,020 |
| Fresenius Kabi USA, LLC | $7,226 |
| Amgen Inc. | $6,806 |
| Hexal AG | $4,900 |
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: 2004-08-19
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 |
|---|---|---|---|---|
| I20040819000439 | I | Rheumatology | MA | 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 | 189 | 114 | $0 |
| 20610 | Aspiration and/or injection of fluid from large joint | 50 | 24 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 34 | 17 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 15 | 12 | $0 |
Insurance plans in this area (ZIP 01655)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | MA | |
| - | MA | |
| - | MA | |
| Family Practice | MA | |
| Physician Assistant | MA | |
| Pulmonary Disease, Critical Care (Intensivists), Allergy/Immunology | MA | |
| - | MA | |
| - | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA |
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