2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1699169649 MD
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AHL JEFFREY CASEJA, MD

Endocrinology, Diabetes & Metabolism Physician in SANTA FE SPRINGS, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 423 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
50%
generic claims · 50% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.1K
99 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: AHL JEFFREY CASEJA, MD is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in SANTA FE SPRINGS, California with a Medicare Part D prescribing footprint of 3K claims across 423 beneficiaries — 50% brand-name prescribing . Industry payments of $2.1K across 99 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: AHL JEFFREY CASEJA, MD filed 3,260 Medicare Part D claims in 2023 across SANTA FE SPRINGS, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

AHL JEFFREY CASEJA, MD 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).

AHL JEFFREY CASEJA, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/26/2015

NPI 1699169649

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

3,260 24% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in California

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among California providers

California providers

Endocrinology, Diabetes & Metabolism Physician share within California

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

AHL JEFFREY CASEJA, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in SANTA FE SPRINGS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1699169649. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

AHL JEFFREY CASEJA, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 12400 BLOOMFIELD AVE FL 3, SANTA FE SPRINGS, CA, 90670, with a listed phone of (562) 967-2760. NPI 1699169649 was issued on 03/26/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CASEJA 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 3,260 prescription claims written by this provider, covering 423 Medicare beneficiaries and totaling roughly $1.6 million in drug spend, split 50% brand-name and 50% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

12400 BLOOMFIELD AVE FL 3
SANTA FE SPRINGS, CA 90670

Provider Details

NPI 1699169649
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Male
NPI Issued 03/26/2015

Hospital and facility affiliations

Facilities where AHL JEFFREY CASEJA, MD 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.

PIH HEALTH PHYSICIANS
SANTA FE SPRINGS, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for AHL JEFFREY CASEJA, MD. Source: openpaymentsdata.cms.gov.

Total received

$2.1K

Largest payer

Dexcom, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 AHL JEFFREY CASEJA, MD. To verify AHL JEFFREY CASEJA, 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 · Brand-heavy

AHL JEFFREY CASEJA, MD — brand share 50.0%
Specialty average (est.)

50% brand-name claims vs 50% generic, on 3,260 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.

3,260
Total Claims
$1.6M
Total Drug Cost
423
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,062
Total Day Supply
209,321
Brand vs Generic
50% brand / 50% generic
Brand Drug Cost
$1.5M
Generic Drug Cost
$48K

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.74
Gender Split
59% female / 41% male
Age Distribution
<65: 49, 65-74: 219, 75-84: 127, 85+: 28

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
262
Ozempic
Semaglutide
262
Metformin Hcl
219
Trulicity
Dulaglutide
179
Atorvastatin Calcium
173
Jardiance
Empagliflozin
165
Humalog Kwikpen U-100
Insulin Lispro
143
Pioglitazone Hcl
125
Glimepiride
54
Methimazole
49

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

Endocrinology, Diabetes & Metabolism Physician Overview

How AHL JEFFREY CASEJA, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

AHL JEFFREY CASEJA, MD's 3,260 claims are above the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in California

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is AHL JEFFREY CASEJA, MD's specialty?
AHL JEFFREY CASEJA, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in SANTA FE SPRINGS, California. Credentials: MD.
How much does AHL JEFFREY CASEJA, MD prescribe under Medicare Part D?
In 2023, AHL JEFFREY CASEJA, MD wrote 3,260 Medicare Part D claims totaling $1.6M in drug costs for 423 beneficiaries.
Where is AHL JEFFREY CASEJA, MD located?
AHL JEFFREY CASEJA, MD is located at 12400 BLOOMFIELD AVE FL 3, SANTA FE SPRINGS, CA, 90670. Phone: (562) 967-2760.
What is AHL JEFFREY CASEJA, MD's NPI number?
AHL JEFFREY CASEJA, MD's National Provider Identifier (NPI) is 1699169649, issued on 03/26/2015.
Does AHL JEFFREY CASEJA, MD prescribe more brand-name or generic drugs?
AHL JEFFREY CASEJA, MD's prescribing is 50% brand-name and 50% generic drugs by claim count, with $1.5M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does AHL JEFFREY CASEJA, MD prescribe most often?
Based on 2023 Medicare Part D data, AHL JEFFREY CASEJA, MD's most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AHL JEFFREY CASEJA, MD accept Medicare?
AHL JEFFREY CASEJA, MD appears in CMS Medicare data with 3,260 Part D claims and 423 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AHL JEFFREY CASEJA, MD's credentials?
AHL JEFFREY CASEJA, MD's NPI is 1699169649 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