NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1801571518 MD
Verify on CMS → Julia Saak, MD
Anesthesiology Physician in St Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 56,432 in Anesthesiology 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.
Prescribing volume
46
Medicare Part D claims · 23 beneficiaries · Anesthesiology Physician avg: 860
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Julia Saak, MD filed 46 Medicare Part D claims in 2023 as a Anesthesiology Physician in St Louis, Missouri.
- 46
- Part D claims, 2023
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.
Julia Saak, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
46 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Julia Saak, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Julia Saak, MD?
Quality data not reportedPrimary specialty
Anesthesiology Physician
Medicare Part D claims
46 95% vs specialty avg
Specialty distribution in Missouri
How Anesthesiology Physician compares to other specialties among Missouri 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 Anesthesiology 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).
Julia Saak, MD appears in the CMS NPPES registry as an Anesthesiology Physician provider holding MD credentials at 1 BARNES JEWISH PLAZA, St Louis, MO, 63110, with a listed phone of (314) 454-5692. NPI 1801571518 was issued on 06/20/2023.
Medicare Part D records for calendar year 2023 show 46 prescription claims written by this provider, covering 23 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 34.8%.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1801571518 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/20/2023 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
46
Total Claims
$4K
Total Drug Cost
23
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 49
- Total Day Supply
- 884
- Generic Drug Cost
- $2K
- Opioid Claims
- 16 (34.8% rate)
Patient Demographics
- Average Patient Age
- 66.4 years
- Avg HCC Risk Score
- 2.18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Julia Saak, MD fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Julia Saak, MD's 46 claims are below the specialty average of 860.
Nearby Anesthesiology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Saak.
Dr. Nabil Abboud
MD
Saint Louis, MO
Dr. Frederick Abele
M.D.
Saint Louis, MO
Dr. Hawa Abubakar
MD
Saint Louis, MO
Dr. Joel Ackerman
M.D.
Lees Summit, MO
Dr. Riley Adams
M.D.
Cape Girardeau, MO
Compare Anesthesiology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Anesthesiology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Missouri
Frequently Asked Questions
What is Julia Saak, MD's specialty? ▼
Julia Saak, MD specializes in Anesthesiology Physician and practices in St Louis, Missouri. Credentials: MD.
How much does Julia Saak, MD prescribe under Medicare Part D? ▼
In 2023, Julia Saak, MD wrote 46 Medicare Part D claims totaling $4K in drug costs for 23 beneficiaries.
Where is Julia Saak, MD located? ▼
Julia Saak, MD is located at 1 BARNES JEWISH PLAZA, St Louis, MO, 63110. Phone: (314) 454-5692.
What is Julia Saak, MD's NPI number? ▼
Julia Saak, MD's National Provider Identifier (NPI) is 1801571518, issued on 06/20/2023.
Does Julia Saak, MD prescribe opioids? ▼
Yes, Julia Saak, MD had 16 opioid claims in 2023 with an opioid prescribing rate of 34.8%.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Julia Saak, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Julia Saak, MD's most frequently prescribed drugs include Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Julia Saak, MD accept Medicare? ▼
Julia Saak, MD appears in CMS Medicare data with 46 Part D claims and 23 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Julia Saak, MD's credentials? ▼
Julia Saak, MD's NPI is 1801571518 with credentials MD. 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.