Jason Wong, MD
Jason Wong, MD is an Adult Medicine Physician in Waltham, MA, registered under NPI 1821052242.
Getting there
The practice address on file is 221 CRESCENT ST, Waltham, MA 02453. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD0041655 | WA | Adult Medicine Physician primary |
| 2021-02364 | NC | Adult Medicine Physician |
| DR.0066357 | CO | Adult Medicine Physician |
| TPME5081 | FL | Adult Medicine Physician |
| 35C.000339 | OH | Adult Medicine Physician |
| 86632 | SC | Adult Medicine Physician |
| 49117 | AL | Adult Medicine Physician |
| 63645 | AZ | Adult Medicine Physician |
| U1456 | TX | Adult Medicine Physician |
| 63516 | TN | Adult Medicine Physician |
Licences are recorded in 10 states: WA, NC, CO, FL, OH, SC, AL, AZ, TX, TN. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - General Practice
- PAC ID
- 3375532559
Enrolled in Medicare 13 times, across 13 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Washington | I20040511001757 | Practitioner - General Practice |
| North Carolina | I20240418004090 | Practitioner - Internal Medicine |
| Tennessee | I20240522000818 | Practitioner - Internal Medicine |
| Texas | I20240522004274 | Practitioner - Internal Medicine |
| Colorado | I20240522004293 | Practitioner - Internal Medicine |
| Arizona | I20240530002025 | Practitioner - Internal Medicine |
| Florida | I20240530002064 | Practitioner - Internal Medicine |
| Ohio | I20240605002386 | Practitioner - Internal Medicine |
| South Carolina | I20240614000913 | Practitioner - Internal Medicine |
| Kentucky | I20240715000998 | Practitioner - Internal Medicine |
| Arkansas | I20241001004142 | Practitioner - Family Practice |
| Missouri | I20241017002343 | Practitioner - Family Practice |
| Indiana | I20241019000022 | Practitioner - Family Practice |
Medicare enrolment is recorded as approved under the provider type Practitioner - General Practice. There are 13 separate enrolment records across 13 states (WA, NC, TN, TX, CO, AZ, FL, OH, SC, KY, AR, MO, IN). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 10 states
This provider holds licences in 10 states: Alabama, Arizona, Colorado, Florida, North Carolina, Ohio, South Carolina, Tennessee, Texas and Washington. Multi-state licensure often means the provider works near a state border, covers more than one office, or delivers care by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Adult Medicine covers
The NUCC recommends this code not be used. Choose a more appropriate code. NUCC Health Care Provider Taxonomy, code 207QA0505X
All registered taxonomy codes
This provider registers 10 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207QA0505X | Adult Medicine Physician Adult Medicine | MD0041655 | WA | primary |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 2021-02364 | NC | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | DR.0066357 | CO | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | TPME5081 | FL | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 35C.000339 | OH | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 86632 | SC | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 49117 | AL | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 63645 | AZ | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | U1456 | TX | |
| 207QA0505X | Adult Medicine Physician Adult Medicine | 63516 | TN |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1821052242 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 13, 2006 |
| Last updated | Sep 23, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
221 CRESCENT ST Waltham, MA 02453 (866) 849-0692 Fax (888) 973-8821 |
| Mailing address |
PO BOX 211699 Eagan, MN 55121 |
| Other identifiers |
8361347
· Medicaid (WA) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 8 | 2 | 1 | 0 | 5 | 2 | 2 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 4 | 1 | 0 | 5 | 4 | 2 | 8 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.