Value explorer

What the directory knows, by place

Every practitioner, organization and location the federal directory lists, grouped by state, county and ZIP. Pick a state to drill in.

6,308,130
practitioners with an address: 37.1%
have a workplace listed: 1,621,668
provider organizations: 54
jurisdictions

No payer layer, and why

Payer organizations carry no address. All 997 of them are absent from every geography in this dataset, so a payer-by-place view is empty by construction rather than by omission.

Organizations are not one number

About half the directory’s organization records are tax records filed under the same NPI as a real organization. They are counted separately throughout and never added together, because adding them roughly doubles the count.

State	Practitioners	Has a workplace	Provider orgs	Counties	ZIPs
CA	899,494	26.6%	172,077	58	1835
NY	420,515	39.1%	80,717	63	1398
FL	379,343	40.0%	138,779	68	1168
TX	369,538	40.8%	134,747	241	1612
OH	264,318	35.0%	52,788	89	953
MI	255,188	31.4%	52,135	83	834
PA	227,917	44.0%	60,584	68	1227
IL	211,794	42.2%	71,858	103	1000
MA	189,579	36.1%	29,690	15	532
WA	177,831	32.0%	30,598	40	482
NC	171,740	43.3%	55,697	101	750
GA	151,610	45.0%	47,890	160	677
NJ	144,824	44.5%	53,383	22	593
MD	132,296	35.5%	42,272	25	442
CO	129,785	36.2%	35,319	61	379
VA	129,075	43.7%	35,824	127	750
MN	125,598	46.2%	29,820	88	578
OR	114,219	30.5%	19,053	35	285
TN	112,857	42.6%	30,797	96	534
IN	112,523	39.5%	26,129	93	556
AZ	111,525	40.7%	37,086	16	353
MO	103,807	41.6%	28,027	116	681
WI	100,933	44.2%	21,073	72	580
NV	82,467	22.6%	16,695	16	149
OK	80,564	31.7%	20,320	78	408
LA	79,087	38.5%	26,390	65	434
KY	78,675	40.9%	21,295	121	455
SC	75,662	42.9%	23,300	47	376
CT	73,459	46.5%	16,060	9	298
UT	68,984	30.5%	13,958	27	184
AL	62,106	47.8%	22,230	68	508
AR	61,112	31.8%	20,908	76	335
NE	58,841	32.9%	9,592	86	311
WV	55,545	28.8%	8,079	56	316
KS	49,290	38.0%	13,803	106	411
NM	48,663	30.2%	9,472	31	151
IA	45,558	47.1%	13,345	100	498
DC	37,128	28.3%	4,648	2	127
MS	35,877	43.9%	13,332	83	306
NH	31,583	41.4%	5,700	11	200
ME	29,656	43.1%	6,429	17	282
ID	29,315	42.2%	11,089	44	171
HI	26,465	32.7%	6,403	5	78
RI	23,466	43.7%	14,347	6	71
AK	21,978	29.8%	4,244	20	58
PR	19,791	31.1%	8,068	78	134
MT	18,853	45.6%	5,856	48	139
ND	18,269	40.7%	3,511	52	137
DE	17,740	39.6%	4,936	4	68
SD	15,706	42.8%	4,377	62	162
VT	13,833	42.2%	2,859	15	159
WY	10,903	35.6%	3,526	24	53
GU	698	43.4%	229	1	7
VI	547	39.5%	324	1	8

Release 2026-10-07. Methodology 0.7.3-draft.

Counts come from the NDH bulk export at the release named above. Organizations are split by record type and never summed: roughly half the Organization file is `ein` tax records that carry an NPI and an address, so adding them to provider organizations roughly doubles the count. Practitioner geography uses the primary address; 14.85% of practitioners list addresses in more than one state and are counted only in the first. Counties are derived from the Census ZCTA-to-county relationship file, taking the county holding the largest share of a ZIP's population; ZIPs with no dominant county are grouped as unknown. Payer organizations carry no address at all and cannot appear in any geography. Profession categories here come from the directory's own Practitioner.qualification taxonomy, not from NPPES. H54 categorises the same practitioners against their NPPES taxonomy and lands 1 to 2 points different per profession as a result: PA physicians read 73.0% here and 74.3% there. Neither is wrong. This view describes what the directory says about itself, which is the right frame for a directory explorer; H54 asks how the directory compares to the federal registry.

Looking for one provider rather than a place? Search by name or NPI. Data as JSON: /api/v1/explorer/index.json.