NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1710918388 M.D
Verify on CMS → Hassan Haddadin, M.D
Critical Care Medicine (Internal Medicine) Physician in San Diego, 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 6,646 in Critical Care Medicine (Internal 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.
Prescribing volume
2K
Medicare Part D claims · 331 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
34%
generic claims · 66% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.5K
60 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Hassan Haddadin, M.D filed 1,608 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in San Diego, California, prescribing 34% generic.
- 2K
- Part D claims, 2023
- 34%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Hassan Haddadin, M.D's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,608 Top 18% higher than 82% 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 certification likely (heuristic, not verified)
Hassan Haddadin, M.D practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Hassan Haddadin, M.D?
Quality data not reportedPrimary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
1,608 50% vs specialty avg
Specialty distribution in California
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among California 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 Critical Care Medicine (Internal 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).
Hassan Haddadin, M.D appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding M.D credentials at 200 W ARBOR DR, San Diego, CA, 92103, with a listed phone of (800) 926-8273. NPI 1710918388 was issued on 07/05/2006.
Medicare Part D records for calendar year 2023 show 1,608 prescription claims written by this provider, covering 331 Medicare beneficiaries and totaling roughly $624K in drug spend, split 66% brand-name and 34% generic by claim count.
Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,646 enrolled providers across 53 states and an average of 1,069 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 | 1710918388 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | M.D |
| Gender | Male |
| NPI Issued | 07/05/2006 |
Hospital and facility affiliations
Facilities where Hassan Haddadin, M.D 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.
Faculty Physicians And Surgeons OF Llusm
Loma Linda, CA
Inspire Pulmonary And Sleep Medicine Specialist
Murrieta, 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 Hassan Haddadin, M.D. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
GlaxoSmithKline, LLC.
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 Hassan Haddadin, M.D. To verify Hassan Haddadin, M.D'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
Hassan Haddadin, M.D - brand share 66.0%
Critical Care Medicine (Internal Medicine) Physician average
66% brand-name claims vs 34% generic, on 1,608 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.
1,608
Total Claims
$624K
Total Drug Cost
331
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,960
- Total Day Supply
- 54,613
- Brand vs Generic
- 66% brand / 34% generic
- Brand Drug Cost
- $603K
- Generic Drug Cost
- $20K
- Antibiotic Claims
- 22
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 2.00
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 25, 65-74: 170, 75-84: 105, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Hassan Haddadin, M.D prescribes most
Top Medicare Part D drugs by claim count, 2023
- Breo Ellipta
Breo Ellipta
268 claims
- Trelegy Ellipta
Trelegy Ellipta
226 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
216 claims
- Breztri Aerosphere 93
Breztri Aerosphere
93 claims
- Spiriva Respimat 86
Spiriva Respimat
86 claims
- Fluticasone Propio… 81
Fluticasone Propionate
81 claims
- Stiolto Respimat 80
Stiolto Respimat
80 claims
- Montelukast Sodium 73
Montelukast Sodium
73 claims
| Drug | Claims |
|---|---|
| Breo Ellipta Fluticasone/Vilanterol | 268 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 226 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 216 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 93 |
| Spiriva Respimat Tiotropium Bromide | 86 |
| Fluticasone Propionate | 81 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 80 |
| Montelukast Sodium | 73 |
| Prednisone | 53 |
| Omeprazole | 44 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Critical Care Medicine (Internal Medicine) Physician in CA →
All providers in California →
Compare specialties →
Critical Care Medicine (Internal Medicine) Physician Overview
How Hassan Haddadin, M.D fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.
6,646
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider
Hassan Haddadin, M.D's 1,608 claims are above the specialty average of 1,069.
Nearby Critical Care Medicine (Internal Medicine) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Haddadin.
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 Critical Care Medicine (Internal Medicine) 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.
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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Frequently Asked Questions
What is Hassan Haddadin, M.D's specialty? ▼
Hassan Haddadin, M.D specializes in Critical Care Medicine (Internal Medicine) Physician and practices in San Diego, California. Credentials: M.D.
How much does Hassan Haddadin, M.D prescribe under Medicare Part D? ▼
In 2023, Hassan Haddadin, M.D wrote 1,608 Medicare Part D claims totaling $624K in drug costs for 331 beneficiaries.
Where is Hassan Haddadin, M.D located? ▼
Hassan Haddadin, M.D is located at 200 W ARBOR DR, San Diego, CA, 92103. Phone: (800) 926-8273.
What is Hassan Haddadin, M.D's NPI number? ▼
Hassan Haddadin, M.D's National Provider Identifier (NPI) is 1710918388, issued on 07/05/2006.
Does Hassan Haddadin, M.D prescribe more brand-name or generic drugs? ▼
Hassan Haddadin, M.D's prescribing is 66% brand-name and 34% generic drugs by claim count, with $603K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,646 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does Hassan Haddadin, M.D prescribe most often? ▼
Based on 2023 Medicare Part D data, Hassan Haddadin, M.D's most frequently prescribed drugs include Breo Ellipta, Trelegy Ellipta, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hassan Haddadin, M.D accept Medicare? ▼
Hassan Haddadin, M.D appears in CMS Medicare data with 1,608 Part D claims and 331 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hassan Haddadin, M.D's credentials? ▼
Hassan Haddadin, M.D's NPI is 1710918388 with credentials M.D. 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.