NPI registry status
Active
2026 NPPES data Otolaryngology Physician NPI 1922471291 MD
Verify on CMS → 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 11,060 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
614
Medicare Part D claims · 222 beneficiaries · Otolaryngology Physician avg: 536
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$57.15
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Caitlin Bertelsen, MD filed 614 Medicare Part D claims in 2024 as an Otolaryngology Physician in Long Beach, California, prescribing 95% generic.
- 614
- Part D claims, 2024
- 95%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥68th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Caitlin Bertelsen, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1922471291), first enumerated 11/08/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 614 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$57.15 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Caitlin Bertelsen, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Bertelsen with other Otolaryngology Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Arman Abdalkhani, MD Palo Alto, CA
- Ahmed Abdelmeguid Palo Alto, CA
- Dr. Rami Abdou, M.D. Santa Rosa, CA
- Eric Abello Orange, CA
- Dr. Mohamed Aboueisha, MD Los Angeles, CA
- Dr. Marianne Abouyared, M.D. Sacramento, CA
Other specialties in Long Beach: Behavior Technician (1,525) · Marriage & Family Therapist (1,021) · Clinical Social Worker (744) · Student in an Organized Health Care Education/Training Program (740)
CMS NPPES provider registry desk
NPI 1922471291 · Otolaryngology Physician
NPI-10 · ENUM-MID · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1922471291
- ENUM-MID 2015
- TAX-MID 11K Otolaryngology Physician
- RX-LIGHT 614
- BOOK-LIGHT 1,225 in California
- PHOTO-ENUM Christopher Kennel,… · 2015
Caitlin Bertelsen, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
614 ≥ 68th percentile 68% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
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 reportedPrimary specialty
Otolaryngology Physician
Medicare Part D claims
614 15% vs specialty avg
Specialty distribution in California
How Otolaryngology 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 Otolaryngology 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).
Practice Address
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 5.0%
Otolaryngology Physician average
5% brand-name claims vs 95% generic, on 614 2024 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 2024.
614
Total Claims
$23K
Total Drug Cost
222
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 854.467
- Total Day Supply
- 20,468
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $9K
- Generic Drug Cost
- $14K
- Opioid Claims
- 31 (5.0% rate)
- Antibiotic Claims
- 36
Patient Demographics
- Average Patient Age
- 74.8 years
- Avg HCC Risk Score
- 1.23
- Gender Split
- 54% female / 46% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Caitlin Bertelsen, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ipratropium Bromide
Ipratropium Bromide
96 claims
- Gabapentin
Gabapentin
73 claims
- Pantoprazole Sodium
Pantoprazole Sodium
69 claims
- Azelastine Hcl
Azelastine Hcl
67 claims
- Prednisone
Prednisone
53 claims
- Omeprazole
Omeprazole
50 claims
- Hydrocodone-Acetam… 29
Hydrocodone-Acetaminophen
29 claims
- Mupirocin 20
Mupirocin
20 claims
| Drug | Claims |
|---|---|
| Ipratropium Bromide | 96 |
| Gabapentin | 73 |
| Pantoprazole Sodium | 69 |
| Azelastine Hcl | 67 |
| Prednisone | 53 |
| Omeprazole | 50 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 29 |
| Mupirocin | 20 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 18 |
| Fluticasone Propionate | 18 |
* 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.
11,060
Otolaryngology Physician Providers in US
54
States with Otolaryngology Physician
536
Avg Claims per Provider
Caitlin Bertelsen, MD's 614 claims are above the specialty average of 536.
Nationwide Otolaryngology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Bertelsen, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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.
One of 1,225 Otolaryngology Physician providers enrolled in California, 11 are shown on this page.
Dr. Norton Abramson
M.D.
San Clemente, CA
Dr. Basil Adad
MD
Walnut Creek, CA
Dr. Brett Adams
MD
Stockton, CA
Dr. Romeo Agbayani
MD
Greenbrae, CA
Dr. Ali Aghamohammadi
MD
Bakersfield, CA
Compare Otolaryngology Physician nationally: see state-by-state distribution →
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 2024, Caitlin Bertelsen, MD wrote 614 Medicare Part D claims totaling $23K in drug costs for 222 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 5% brand-name and 95% generic drugs by claim count, with $9K in brand drug costs.
Does Caitlin Bertelsen, MD prescribe opioids? ▼
Yes, Caitlin Bertelsen, MD had 31 opioid claims in 2024 with an opioid prescribing rate of 5.0%.
How many Otolaryngology Physician providers are there in the US? ▼
There are 11,060 Otolaryngology Physician providers across 54 states in the US. The average Otolaryngology Physician provider writes 536 Medicare Part D claims per year.
What drugs does Caitlin Bertelsen, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Caitlin Bertelsen, MD's most frequently prescribed drugs include Ipratropium Bromide, Gabapentin, Pantoprazole Sodium. 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 614 Part D claims and 222 Medicare beneficiaries in 2024. 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
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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.