NPI registry status
Active
2026 NPPES data Pediatric Critical Care Medicine Physician NPI 1154516813 D.O.
Verify on CMS → Nachman Ullman, D.O.
Pediatric Critical Care Medicine Physician in Phoenix, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,363 in Pediatric Critical Care Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Nachman Ullman, D.O. is a Pediatric Critical Care Medicine Physician in Phoenix, Arizona, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #145
- Pediatric Critical Care Medicine Physician rank among Arizona specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Nachman Ullman, D.O.
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1154516813), first enumerated 09/06/2007.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1154516813 · Pediatric Critical Care Medicine Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1154516813
- ENUM-MID 2007
- TAX-NARROW 2,363
- RX-NONE No Part D
- BOOK-THIN 71 in Arizona
- PHOTO-ENUM Eloa Adams · 2007
✓
Board certification likely (heuristic, not verified)
Nachman Ullman, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Nachman Ullman, D.O.?
Quality data not reportedPrimary specialty
Pediatric Critical Care Medicine Physician
Specialty distribution in Arizona
How Pediatric Critical Care Medicine Physician compares to other specialties among Arizona providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pediatric Critical Care Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1154516813 |
|---|---|
| Specialty | Pediatric Critical Care Medicine Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 09/06/2007 |
Hospital and facility affiliations
Facilities where Nachman Ullman, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Longhorn Emergency Medical Associates PA
Austin, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
More Pediatric Critical Care Medicine Physician in AZ →
All providers in Arizona →
Compare specialties →
Pediatric Critical Care Medicine Physician Overview
How Nachman Ullman, D.O. fits within the Pediatric Critical Care Medicine Physician landscape nationally.
2,363
Pediatric Critical Care Medicine Physician Providers in US
52
States with Pediatric Critical Care Medicine Physician
66
Avg Claims per Provider
Nationwide Pediatric Critical Care Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ullman, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pediatric Critical Care Medicine Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Ullman.
One of 71 Pediatric Critical Care Medicine Physician providers enrolled in Arizona, 5 are shown here.
Dr. Farbod Bahadori Esfahani
MD, FAAP, FRCPC
Phoenix, AZ
Dr. Thomas Bahk
M.D.
Phoenix, AZ
Dr. Paul Bakerman
MD
Phoenix, AZ
Dr. David Beyda
MD
Phoenix, AZ
Dr. Rahul Bhatia
MD
Tempe, AZ
Compare Pediatric Critical Care Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Nachman Ullman, D.O.'s specialty? ▼
Nachman Ullman, D.O. specializes in Pediatric Critical Care Medicine Physician and practices in Phoenix, Arizona. Credentials: D.O..
Where is Nachman Ullman, D.O. located? ▼
Nachman Ullman, D.O. is located at 2601 E ROOSEVELT ST, Phoenix, AZ, 85008. Phone: (602) 344-5461.
What is Nachman Ullman, D.O.'s NPI number? ▼
Nachman Ullman, D.O.'s National Provider Identifier (NPI) is 1154516813, issued on 09/06/2007.
How many Pediatric Critical Care Medicine Physician providers are there in the US? ▼
There are 2,363 Pediatric Critical Care Medicine Physician providers across 52 states in the US. The average Pediatric Critical Care Medicine Physician provider writes 66 Medicare Part D claims per year.
Does Nachman Ullman, D.O. accept Medicare? ▼
Nachman Ullman, D.O. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nachman Ullman, D.O.'s credentials? ▼
Nachman Ullman, D.O.'s NPI is 1154516813 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.