2026 NPPES data Otolaryngology Physician NPI 1922471291 MD
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Caitlin Bertelsen, MD

Otolaryngology Physician in Long Beach, 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 10,895 in Otolaryngology 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
553
Medicare Part D claims · 212 beneficiaries · Otolaryngology Physician avg: 509
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$57.15
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Caitlin Bertelsen, MD filed 553 Medicare Part D claims in 2023 as a Otolaryngology Physician in Long Beach, California, prescribing 93% generic.

553
Part D claims, 2023
93%
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.

Caitlin Bertelsen, MD's Medicare Part D volume vs every U.S. prescriber

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

553 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 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. 2K+: 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 certification likely (heuristic, not verified)

Caitlin Bertelsen, 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).

What does the federal data show about Caitlin Bertelsen, MD?

Quality data not reported

NPI registry status

Active

Issued 11/08/2015

NPI 1922471291

Primary specialty

Otolaryngology Physician

Mid-sized

10,895 US NPIs in this specialty

Medicare Part D claims

553 9% vs specialty avg

2023 prescription claims

Specialty avg: 509

Specialty distribution in California

How Otolaryngology 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%Otolaryngology Physician - 0.1%Otolaryngology Physician0.1%
Largest specialties in California (% of in-state 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 Otolaryngology Physician. Verify directly:

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).

Caitlin Bertelsen, MD appears in the CMS NPPES registry as a Otolaryngology Physician provider holding MD credentials at 433 E WARDLOW RD, Long Beach, CA, 90807, with a listed phone of (562) 427-0550. NPI 1922471291 was issued on 11/08/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bertelsen 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 553 prescription claims written by this provider, covering 212 Medicare beneficiaries and totaling roughly $22K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 3.4%. 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.

Otolaryngology Physician is a mid-sized specialty nationwide, with 10,895 enrolled providers across 54 states and an average of 509 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

433 E WARDLOW RD
Long Beach, CA 90807

Provider Details

NPI 1922471291
Specialty Otolaryngology Physician
Credentials MD
Gender Female
NPI Issued 11/08/2015

Hospital and facility affiliations

Facilities where Caitlin Bertelsen, 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.

Southern California Permanente Medical Group
Anaheim, 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 Caitlin Bertelsen, MD. Source: openpaymentsdata.cms.gov.

Total received

$57

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 Caitlin Bertelsen, MD. To verify Caitlin Bertelsen, 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 · Generic-heavy

Caitlin Bertelsen, MD - brand share 7.0%
Otolaryngology Physician average

7% brand-name claims vs 93% generic, on 553 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.

553
Total Claims
$22K
Total Drug Cost
212
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
671
Total Day Supply
14,931
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$10K
Generic Drug Cost
$12K
Opioid Claims
19 (3.4% rate)
Antibiotic Claims
57

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.13
Gender Split
57% female / 43% male
Age Distribution
<65: 11, 65-74: 107, 75-84: 75, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

What Caitlin Bertelsen, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Pantoprazole Sodium
69
Azelastine Hcl
64
Ipratropium Bromide
61
Prednisone
46
Fluticasone Propionate
41
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
26
Gabapentin
21
Ciprofloxacin-Dexamethasone
Ciprofloxacin Hcl/Dexameth
19
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
17
Triamcinolone Acetonide
15

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

Otolaryngology Physician Overview

How Caitlin Bertelsen, MD fits within the Otolaryngology Physician landscape nationally.

10,895
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
509
Avg Claims per Provider

Caitlin Bertelsen, MD's 553 claims are above the specialty average of 509.

Nearby Otolaryngology Physician Providers in California

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

Compare Otolaryngology 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 Otolaryngology 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 Caitlin Bertelsen, MD's specialty?
Caitlin Bertelsen, MD specializes in Otolaryngology Physician and practices in Long Beach, California. Credentials: MD.
How much does Caitlin Bertelsen, MD prescribe under Medicare Part D?
In 2023, Caitlin Bertelsen, MD wrote 553 Medicare Part D claims totaling $22K in drug costs for 212 beneficiaries.
Where is Caitlin Bertelsen, MD located?
Caitlin Bertelsen, MD is located at 433 E WARDLOW RD, Long Beach, CA, 90807. Phone: (562) 427-0550.
What is Caitlin Bertelsen, MD's NPI number?
Caitlin Bertelsen, MD's National Provider Identifier (NPI) is 1922471291, issued on 11/08/2015.
Does Caitlin Bertelsen, MD prescribe more brand-name or generic drugs?
Caitlin Bertelsen, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $10K in brand drug costs.
Does Caitlin Bertelsen, MD prescribe opioids?
Yes, Caitlin Bertelsen, MD had 19 opioid claims in 2023 with an opioid prescribing rate of 3.4%.
How many Otolaryngology Physician providers are there in the US?
There are 10,895 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 509 Medicare Part D claims per year.
What drugs does Caitlin Bertelsen, MD prescribe most often?
Based on 2023 Medicare Part D data, Caitlin Bertelsen, MD's most frequently prescribed drugs include Pantoprazole Sodium, Azelastine Hcl, Ipratropium Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Caitlin Bertelsen, MD accept Medicare?
Caitlin Bertelsen, MD appears in CMS Medicare data with 553 Part D claims and 212 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Caitlin Bertelsen, MD's credentials?
Caitlin Bertelsen, MD's NPI is 1922471291 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.