John Long, MD
John Long, MD is an Obstetrics & Gynecology Physician in Woodbridge, VA, registered under NPI 1043388499.
Getting there
The practice address on file is 14139 POTOMAC MILLS RD KAISER PERMANENTE WOODBRIDGE MEDICAL CENTER, Woodbridge, VA 22192. 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 |
|---|---|---|
| 0101043730 | VA | Obstetrics & Gynecology Physician primary |
This provider holds licence 0101043730 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Obstetrics/gynecology
- PAC ID
- 6103953831
Enrolled in Medicare 3 times, across 3 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Virginia | I20100428000672 | Practitioner - Obstetrics/gynecology |
| Maryland | I20210409001656 | Practitioner - Obstetrics/gynecology |
| District of Columbia | I20210412000254 | Practitioner - Obstetrics/gynecology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Obstetrics/gynecology. There are 3 separate enrolment records across 3 states (VA, MD, DC). 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.
What Obstetrics & Gynecology covers
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women. NUCC Health Care Provider Taxonomy, code 207V00000X
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 | 1043388499 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 2, 2006 |
| Last updated | Nov 9, 2011 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
14139 POTOMAC MILLS RD KAISER PERMANENTE WOODBRIDGE MEDICAL CENTER Woodbridge, VA 22192 (703) 490-8400 Fax (703) 490-7635 |
| Mailing address |
2101 E JEFFERSON ST KAISER PERMANENTE MEDICARE ENROLLMENT Rockville, MD 20852 |
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 | 0 | 4 | 3 | 3 | 8 | 8 | 4 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 8 | 3 | 6 | 8 | 7 | 4 | 9 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
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.