2026 NPPES data Anesthesiology Physician NPI 1639449390 MD
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Edward Stern, MD

Anesthesiology Physician in Thousand Oaks, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 56,398 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
39
Medicare Part D claims · Anesthesiology Physician avg: 860
Generic prescribing
54%
generic claims · 46% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Edward Stern, MD filed 39 Medicare Part D claims in 2023 as a Anesthesiology Physician in Thousand Oaks, California, prescribing 54% generic.

39
Part D claims, 2023
54%
generic prescribing

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.

Edward Stern, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

39 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

Edward Stern, 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 Edward Stern, MD?

Quality data not reported

NPI registry status

Active

Issued 01/11/2012

NPI 1639449390

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

39 95% vs specialty avg

2023 prescription claims

Specialty avg: 860

Specialty distribution in California

How Anesthesiology Physician compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician — 17.3%Behavior Technician17.3%Marriage & Family Therapist — 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program — 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor — 3.9%Mental Health Counselor3.9%Pharmacist — 3.5%Pharmacist3.5%Clinical Social Worker — 3.1%Clinical Social Worker3.1%Anesthesiology Physician — 0.8%Anesthesiology Physician0.8%
Largest specialties in California (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Anesthesiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anesthesiology Physician ABMS/AOA estimate

Est. board-certified rate (Anesthesiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anesthesiology Physician) — ABMS / AOA estimate

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).

Edward Stern, MD appears in the CMS NPPES registry as a Anesthesiology Physician provider holding MD credentials at 2066 SEABREEZE ST, Thousand Oaks, CA, 91320, with a listed phone of (805) 375-6391. NPI 1639449390 was issued on 01/11/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Stern most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 39 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $13K in drug spend, split 46% brand-name and 54% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 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

2066 SEABREEZE ST
Thousand Oaks, CA 91320

Provider Details

NPI 1639449390
Specialty Anesthesiology Physician
Credentials MD
Gender Male
NPI Issued 01/11/2012

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to Edward Stern, MD. To verify Edward Stern, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

Edward Stern, MD — brand share 46.0%
Anesthesiology Physician average

46% brand-name claims vs 54% generic, on 39 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

39
Total Claims
$13K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
51
Total Day Supply
1,540
Brand vs Generic
46% brand / 54% generic
Brand Drug Cost
$11K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
90.0 years
Avg HCC Risk Score
1.73

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Eliquis
Apixaban
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Anesthesiology Physician Overview

How Edward Stern, MD fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

Edward Stern, MD's 39 claims are below the specialty average of 860.

Nearby Anesthesiology Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Stern.

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 California 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.

Frequently Asked Questions

What is Edward Stern, MD's specialty?
Edward Stern, MD specializes in Anesthesiology Physician and practices in Thousand Oaks, California. Credentials: MD.
How much does Edward Stern, MD prescribe under Medicare Part D?
In 2023, Edward Stern, MD wrote 39 Medicare Part D claims totaling $13K in drug costs for N/A beneficiaries.
Where is Edward Stern, MD located?
Edward Stern, MD is located at 2066 SEABREEZE ST, Thousand Oaks, CA, 91320. Phone: (805) 375-6391.
What is Edward Stern, MD's NPI number?
Edward Stern, MD's National Provider Identifier (NPI) is 1639449390, issued on 01/11/2012.
Does Edward Stern, MD prescribe more brand-name or generic drugs?
Edward Stern, MD's prescribing is 46% brand-name and 54% generic drugs by claim count, with $11K in brand drug costs.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 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 Edward Stern, MD prescribe most often?
Based on 2023 Medicare Part D data, Edward Stern, MD's most frequently prescribed drugs include Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Stern, MD accept Medicare?
Edward Stern, MD appears in CMS Medicare data with 39 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Stern, MD's credentials?
Edward Stern, MD's NPI is 1639449390 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

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.