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.

6,284,954
practitioners with an address: 35.8%
have a workplace listed: 1,624,735
provider organizations: 54
jurisdictions

No payer layer, and why

Payer organizations carry no address. All 27 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	888,629	24.7%	172,468	58	1828
NY	425,031	38.3%	81,080	63	1397
FL	374,388	38.4%	139,074	68	1162
TX	364,765	40.2%	135,596	242	1613
OH	263,937	32.5%	52,960	89	949
MI	253,336	30.9%	52,111	83	833
PA	230,837	43.7%	60,769	68	1226
IL	218,788	42.5%	71,342	103	999
MA	190,122	35.4%	29,624	15	532
WA	176,734	29.5%	30,320	40	482
NC	170,703	42.4%	55,734	101	749
GA	153,301	44.9%	47,988	160	676
NJ	144,940	44.6%	53,547	22	592
MD	131,389	35.4%	42,377	25	441
CO	130,066	36.3%	35,153	61	378
VA	128,246	42.9%	35,985	127	747
MN	125,366	42.9%	29,613	88	575
OR	113,787	27.9%	19,076	35	284
IN	110,478	36.9%	26,128	93	554
AZ	109,257	40.1%	36,983	16	353
TN	108,683	38.9%	31,334	96	532
MO	107,227	42.5%	28,144	116	681
WI	100,580	43.6%	21,152	72	577
NV	80,722	18.6%	16,658	16	149
OK	80,659	30.7%	20,304	78	407
LA	79,328	36.8%	26,565	65	434
KY	78,326	40.3%	21,609	121	452
SC	75,110	42.1%	23,333	47	374
CT	73,906	46.5%	15,984	9	298
UT	67,447	27.2%	14,039	26	183
AL	61,710	46.7%	22,322	68	507
AR	61,086	29.7%	20,917	76	334
NE	57,298	23.3%	9,596	86	310
WV	55,868	26.3%	8,102	56	316
KS	48,532	37.7%	13,796	106	411
NM	48,395	27.6%	9,440	30	149
IA	45,797	47.6%	13,339	100	499
DC	37,368	28.7%	4,655	2	126
MS	35,668	43.0%	13,309	83	305
NH	32,209	41.5%	5,769	11	200
ME	29,300	41.8%	6,327	17	282
ID	28,449	39.8%	11,058	44	170
HI	25,668	30.1%	6,439	5	79
RI	23,431	43.5%	14,428	6	71
AK	21,758	24.9%	4,323	19	57
PR	19,696	31.1%	8,246	78	135
ND	18,668	37.4%	3,524	52	138
MT	18,652	43.1%	5,865	48	140
DE	17,651	39.0%	4,963	4	67
SD	15,560	41.0%	4,368	62	162
VT	14,088	43.1%	2,843	15	157
WY	10,846	33.9%	3,494	24	53
GU	669	42.2%	233	1	7
VI	499	34.5%	329	1	8

Release 2026-08-20. 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.