Maternal Newborn (Registered Nurse) in California

86 maternal newborn (registered nurse) in California: 64 with work email (14 trusted tier), 86 with practice phone. Counts refreshed nightly.

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What the list holds

Recordsactive providers on the list: 86
With work email74% of records: 64
With trusted-tier email22% of the emails on this list: 14
With practice phone100% of records: 86
With practice city, state and ZIP100% of records: 86

What they bill and prescribe

Published Medicare data for 2024, measured over the 664 active individual maternal newborn (registered nurse) on file nationally on 2026-10-05 — a different base from the records above, and the same measurement the data page publishes for every specialty.

Clinicians in this specialtyactive individual providers filed under it, nationally - not the record count above: 664
With a published procedure line1 of the 664 active individual maternal newborn (registered nurse) on file: under 1%
With published prescribing4 of the 664 active individual maternal newborn (registered nurse) on file: under 1%

Published Medicare fee-for-service data for 2024, covering about one in 664 clinicians nationally, and more in the specialties that bill it most — not all-payor claims, and low-volume providers are removed before publication. A provider with nothing there has no published Medicare volume, which covers no volume, volume below the publication threshold and not billing Medicare at all — the published data does not separate them, and one year is held, so nothing here is a trend.

A high share here means the published Medicare data covers that specialty well. It says nothing about how complete our contact data is for it — different datasets, measured over different populations — and the email, phone and location fill rates are counted and published separately on the same page.

Related lists in California

Leadership and facilities

Reaching the organisations these providers work for? Healthcare leadership by role, health systems and facility lists.

By state

Maternal Newborn (Registered Nurse) by state

State	Records	With email	Trusted-tier email	With phone
California	86	64	14	86
Pennsylvania	47	33	14	47
Washington	42	40	6	42
Georgia	40	28	4	40
New York	39	26	3	39
Texas	32	18	5	32
Massachusetts	25	16	3	25
Florida	24	14	3	24
Arizona	23	18	2	23
Colorado	23	18	3	23
Michigan	19	10	3	19
Ohio	15	10	2	15
Oregon	15	13	1	15
Illinois	14	13	5	14
Maryland	14	7	1	14
New Mexico	14	10	1	14
North Carolina	13	9	4	13
South Carolina	13	12	1	13
New Jersey	12	7	1	12
Utah	12	12	2	12
Connecticut	11	7	0	11
Delaware	11	10	0	11
Minnesota	11	3	1	11
Wisconsin	9	7	2	9
Alaska	8	8	1	8
Indiana	8	4	0	8
Virginia	8	4	1	8
District of Columbia	7	1	1	7
Louisiana	7	2	1	7
Missouri	7	3	0	7
Oklahoma	7	6	1	7
Tennessee	7	5	0	7
Alabama	6	4	1	6
Hawaii	5	3	2	5
Kentucky	5	1	0	5
Montana	5	3	1	5
Arkansas	4	3	0	4
Mississippi	4	0	0	4
South Dakota	4	4	0	4
Iowa	3	2	0	3
Kansas	3	2	1	3
Idaho	2	2	1	2
Nevada	2	2	1	2
Puerto Rico	2	2	0	2
Rhode Island	2	2	0	2
Wyoming	2	2	1	2
Nebraska	1	0	0	1
New Hampshire	1	0	0	1
Vermont	1	0	0	1
West Virginia	1	1	0	1

States with fewer than 50 maternal newborn (registered nurse) are counted here but have no page of their own.

The data

Fields and a sample

What each record carries

NPI: The provider's 10-digit National Provider Identifier
Name and credentials: As filed, with credentials such as MD, DO, NP
Type and status: Individual or organisation; active or inactive
Specialty and specialty group: Primary taxonomy, classification and specialisation
Practice city, state and ZIP: Where the provider practises
Practice phone: The phone on the provider's practice record
Employer and employer domain: Who the provider works for, where known, with how it was established
Work email (up to three): Each with where it came from; filter to trusted-tier addresses only
EHR system: The electronic health record the practice runs, where evidenced
Last updated: The date the record was last refreshed

Sample record

Invented for illustration - not a real provider. Names, numbers and addresses here are fictional.

NPI: 0000000000 (sample)
Name: Jordan Sample, MD (fictional)
Specialty: Maternal Newborn (Registered Nurse)
Practice location: Anytown, ST 00000
Practice phone: (555) 010-0123
Work email: [email protected] · trusted tier
Employer: Example Health Partners
EHR system: Example EHR
Last updated: 2026-01-01

Use cases

What teams use it for

Email campaigns that land

Filter to trusted-tier addresses only, and see before you buy how many of the list carry one.

Territory planning

Counts by state and practice location show where the population is before a rep is hired or a route is drawn.

Recruiting

Reach providers of one specialty in the states you are hiring in, with the practice phone on the record.

Market sizing

The by-state table is the market: real, current counts rather than an estimate from a survey.

FAQ

Questions about this list

How many maternal newborn (registered nurse) are on the list?

86 active maternal newborn (registered nurse) in California, counted from the register on 2026-10-05.

How many maternal newborn (registered nurse) have an email address?

64 (74%) have at least one work email on file, and 14 of them have an address in the trusted tier.

How many have a phone number?

86 (100%) have a practice phone on their record.

What does a record include?

NPI, name and credentials, specialty, practice city, state and ZIP, practice phone, employer, up to three work emails with where each came from, EHR system where evidenced, and the date the record was last updated.

What share of all US maternal newborn (registered nurse) practise in California?

13% - 86 of 685 nationally.

How many maternal newborn (registered nurse) have published Medicare data?

under 1% of the 664 active individual maternal newborn (registered nurse) on file have at least one published Medicare procedure line, and under 1% have published prescribing - measured nationally on 2026-10-05. Published Medicare fee-for-service data for 2024, covering about one in 664 clinicians nationally, and more in the specialties that bill it most — not all-payor claims, and low-volume providers are removed before publication.

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