Robert Nierenberg, M.D.
Robert Nierenberg, M.D. is a Legal Medicine (M.D./D.O.) Physician in Honolulu, HI, registered under NPI 1487794012. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 932 WARD AVE SUITE 460, Honolulu, HI 96814. 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 |
|---|---|---|
| MD-2869 | HI | Legal Medicine (M.D./D.O.) Physician primary |
| MD-2869 | HI | Sports Medicine (Family Medicine)… |
| MD-2869 | HI | Sports Medicine (Internal Medicine)… |
| MD-2869 | HI | General Practice Physician |
This provider holds licence MD-2869 issued in HI. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Legal Medicine covers
Legal Medicine is a special field of medicine that focuses on various aspects of medicine and law. Historically, the practice of legal medicine made contributions to medicine as a scientific instrument to solve criminal perplexities. Since World War II, the domain of legal medicine has broadened to include not only aspects of medical science to solve legal and criminal problems but aspects of law as it applies to medicine. Legal Medicine continues to grow as medicolegal issues like medical malpractice and liability, government regulation of health care, issues of tort reform, and moral and ethical complexities presented by technological advances become increasingly prominent. Many medical schools have implemented courses which supply medicolegal instruction for medical students, and many law schools now offer medicolegal courses. Also, dual degree programs in law and medicine have been created to assist physicians to bridge the gap between medicine and the law. NUCC Health Care Provider Taxonomy, code 209800000X
All registered taxonomy codes
This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 209800000X | Legal Medicine (M.D./D.O.) Physician | MD-2869 | HI | primary |
| 207QS0010X | Sports Medicine (Family Medicine) Physician Sports Medicine | MD-2869 | HI | |
| 207RS0010X | Sports Medicine (Internal Medicine) Physician Sports Medicine | MD-2869 | HI | |
| 208D00000X | General Practice Physician | MD-2869 | HI |
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 | 1487794012 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 6, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
932 WARD AVE SUITE 460 Honolulu, HI 96814 (808) 521-6564 |
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 | 4 | 8 | 7 | 7 | 9 | 4 | 0 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 7 | 7 | 5 | 9 | 8 | 0 | 2 |
Sum = 68 · next multiple of 10 = 70 · 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.