Code Values

Allowed values for coded fields. Source: CMS NPPES Code Values, February 1, 2025.

1. Entity Type Code

Code	Description
1	Individual
2	Organization

2. Sole Proprietor

Code	Description
Y	Yes — the individual is a sole proprietor
N	No — not a sole proprietor
X	Not answered

3. Organization Subpart

Code	Description
Y	Yes — the organization is a subpart
N	No — not a subpart
X	Not answered

4. Sex Code

Code	Description
M	Male
F	Female
U	Undisclosed
X	Undisclosed

5. NPI Deactivation Reason

Code	Description
Death	Provider is deceased
Disbandment	Organization has disbanded
Fraud	NPI was obtained fraudulently
Other	Other reason

6. Other Provider Name Type

Code	Description
1	Former Name — Individual
2	Professional Name — Individual
3	Doing Business As — Organization
4	Former Legal Business Name — Organization
5	Other Name — Both

7. Name Prefix

Code	Description
Ms.	Ms.
Mr.	Mr.
Miss	Miss
Mrs.	Mrs.
Dr.	Dr.
Prof.	Prof.

8. Name Suffix

Code	Description
Jr.	Jr.
Sr.	Sr.
I	I
II	II
III	III
IV	IV
V	V
VI	VI
VII	VII
VIII	VIII
IX	IX
X	X

9. Primary Taxonomy Switch

Code	Description
Y	Yes — primary taxonomy (only one per NPI)
N	No — not the primary taxonomy
X	Not answered

10. Group Taxonomy

Code	Description
193200000X	Multi-Specialty Group — practitioners with different specializations
193400000X	Single Specialty Group — practitioners with the same specialization

11. Other Provider Identifier Type

Code	Description
1	Other
5	Medicaid
—	Note: legacy values (02 Medicare UPIN, 04 Medicare ID, 06 BCBS, 07 Medicare PIN) may appear in older records.