NPPES file of Aug 9, 2026

Margaret Herman Ciesla, R.N.

Psychiatric/Mental Health Registered Nurse · Santa Monica, CA

Margaret Herman Ciesla, R.N. is a psychiatric/mental health registered nurse with a practice address in Santa Monica, California, and NPI 1891905162, issued on May 23, 2007. Check the license (California RN241366, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891905162
Name
Margaret Herman Ciesla
Credential
R.N.
Primary taxonomy
Psychiatric/Mental Health Registered Nurse 163WP0808X
License number
RN241366 CA
Self-reported in NPPES; status is on the state search
Practice location
1301 20TH St, Santa Monica, CA 90404
Phone
(310) 433-5535
Enumerated
May 23, 2007
Record last updated
Oct 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110809000279); may accept Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest psychiatric/mental health registered nurse records → All 2,568 in California → Look up another NPI →

Also registered at 1301 20TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Robert Adair, M.D.Specialist1629013321
  2. Parviz Afshani, M.D.Gastroenterology Physician1083693766
  3. James Anastasi, M.D.Legal Medicine1649280074
  4. Richard Bennett, MDDermatology Physician1760416648
  5. Philip Bretsky, MD, PHDInternal Medicine Physician1568683076
  6. James Burrows, M.D.Pulmonary Disease Physician1790872281

Verify Margaret Herman Ciesla in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license RN241366    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

34% fewer Medicare Part D claims than the average psychiatric/mental health registered nurse in 2024

589 Medicare Part D claims for 24 beneficiaries, against an average of 888 among the 242 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. Margaret Ciesla589
  2. Specialty average888

Most prescribed

  1. Clonazepam94 claims
  2. Dextroamphetamine-Amphetamine73 claims
  3. Venlafaxine Hcl Er70 claims
  4. Alprazolam34 claims
  5. Lamotrigine34 claims
  6. Gabapentin28 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $87.22

3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 213 providers of this specialty with any payment received $1,316.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Margaret Ciesla$87.22
  2. Specialty average$1,316.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Margaret Herman Ciesla among 2,568 psychiatric/mental health registered nurse records in California

Margaret Herman Ciesla, R.N. is one of 2,568 psychiatric/mental health registered nurse records with a practice address in California. 2% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 4% of them.

  • NPI issued2007 · 4% of these records are older, 87% newer
  • In a Medicare fileYes · 2% of these records are
  • In the CMS Doctors and Clinicians fileYes · under 1% of these records are
  • Graduated2007 · median 2023 among the 20 with a school on file
  • Record last updated2020 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Registered Nurse providers in California

There are 2,568 psychiatric/mental health registered nurse records in California.

All 2,568 in California → Every provider in Santa Monica → Psychiatric/Mental Health Registered Nurse nationwide →

The 8 psychiatric/mental health registered nurse records with the nearest ZIP codes

  1. Valerie Hayes, N.P.Santa Monica, CA 904041487081188
  2. Meghan Loftin, RNSanta Monica, CA 904051417570623
  3. Arsalan Malik, MDSanta Monica, CA 904031366605784
  4. Ruth Castillo, RNTorrance, CA 905021356194807
  5. Jazmyn Childress, EDD, MSN, MPHTorrance, CA 905021679281380
  6. Lalin FernandoTorrance, CA 905021295035426
  7. Shirley Garcia, RNTorrance, CA 905021366506701
  8. Harmandeep HiraTorrance, CA 905021477042729

Common questions

What is Margaret Herman Ciesla, R.N.'s NPI number?

Margaret Herman Ciesla, R.N.'s National Provider Identifier (NPI) is 1891905162, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Margaret Herman Ciesla, R.N. located?

The NPPES record lists a practice address at 1301 20TH St, Santa Monica, CA, 90404. Phone: (310) 433-5535. Providers update this record themselves, so call before visiting.

How can I verify Margaret Herman Ciesla, R.N.'s license?

NPPES lists California license number RN241366, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Margaret Herman Ciesla, R.N. prescribe under Medicare Part D?

In 2024, Margaret Herman Ciesla, R.N. had 589 Medicare Part D claims for 24 beneficiaries; the average among psychiatric/mental health registered nurse prescribers was 888. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.