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Nursing Service Providers · Registered Nurse · counts refreshed 2026-10-05

Obstetric, High-Risk (Registered Nurse) list

152 obstetric, high-risk (registered nurse) in the US: 94 with work email (19 trusted tier), 152 with practice phone. Counts refreshed nightly.

What the list holds

Recordsactive providers on the list
152
With work email62% of records
94
With trusted-tier email20% of the emails on this list
19
With practice phone100% of records
152
With practice city, state and ZIP100% of records
152

What they bill and prescribe

Published Medicare data for 2024, measured over the 148 active individual obstetric, high-risk (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
148
With a published procedure line148 in the specialty is too small a base for a percentage
0
With published prescribing148 in the specialty is too small a base for a percentage
1

Published Medicare fee-for-service data for 2024, covering about one in 148 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.

Leadership and facilities

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

By state

Obstetric, High-Risk (Registered Nurse) by state

StateRecordsWith emailTrusted-tier emailWith phone
Texas2414124
California158315
North Carolina126012
Arizona1110211
New York8608
Ohio8418
Tennessee7317
Colorado5415
Maryland5415
Washington5405
Florida4204
Georgia4414
Indiana4324
Michigan4314
Utah4304
Illinois3313
Kentucky3213
Minnesota3203
New Jersey3313
Connecticut2002
Missouri2222
Montana2102
New Mexico2102
Oregon2002
Wisconsin2002
Alabama1001
Hawaii1101
Iowa1001
Louisiana1101
Massachusetts1001
Nevada1001
Virginia1001

States with fewer than 50 obstetric, high-risk (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
Obstetric, High-Risk (Registered Nurse)
Practice location
Anytown, ST 00000
Practice phone
(555) 010-0123
Work email
jordan.sample@example.com · 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 obstetric, high-risk (registered nurse) are on the list?

152 active obstetric, high-risk (registered nurse) in the United States, counted from the register on 2026-10-05.

How many obstetric, high-risk (registered nurse) have an email address?

94 (62%) have at least one work email on file, and 19 of them have an address in the trusted tier.

How many have a phone number?

152 (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.

How many obstetric, high-risk (registered nurse) have published Medicare data?

0 of the 148 active individual obstetric, high-risk (registered nurse) on file have at least one published Medicare procedure line and 1 have published prescribing, measured nationally. Too few to publish a share: under 200 clinicians, one person moves a whole-percent figure by more than half a point, so the counts are published and the percentage is not.

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Obstetric, High-Risk (Registered Nurse) - email and mailing list · NPI Mark