NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1649249483 M.D.
Verify on CMS → Claribel Tan, M.D.
Rheumatology Physician in Anchorage, Alaska.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 in Rheumatology 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
146
Medicare Part D claims · 13 beneficiaries · Rheumatology Physician avg: 2K
Industry payments
$42.23
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Claribel Tan, M.D. filed 146 Medicare Part D claims in 2023 as a Rheumatology Physician in Anchorage, Alaska.
- 146
- Part D claims, 2023
- $42.23
- industry payments (Sunshine Act)
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.
Claribel Tan, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
146 35th percentile higher than 35% 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-eligible specialty (heuristic, not verified)
Claribel Tan, M.D. 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 Claribel Tan, M.D.?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
146 93% vs specialty avg
Specialty distribution in Alaska
How Rheumatology Physician compares to other specialties among Alaska 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 Rheumatology 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).
Claribel Tan, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 2401 E 42ND AVENUE, Anchorage, AK, 99508, with a listed phone of (907) 929-1859. NPI 1649249483 was issued on 03/15/2006.
Medicare Part D records for calendar year 2023 show 146 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $130K in drug spend.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 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 | 1649249483 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 03/15/2006 |
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 Claribel Tan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$42
Largest payer
Lilly USA, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
146
Total Claims
$130K
Total Drug Cost
13
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 351
- Total Day Supply
- 10,352
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 0.80
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Claribel Tan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
30 claims
- Otezla
Otezla
14 claims
- Leflunomide 11
Leflunomide
11 claims
| Drug | Claims |
|---|---|
| Hydroxychloroquine Sulfate | 30 |
| Otezla Apremilast | 14 |
| Leflunomide | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Claribel Tan, M.D. fits within the Rheumatology Physician landscape nationally.
6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Claribel Tan, M.D.'s 146 claims are below the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Alaska
Other clinicians with the same primary specialty enrolled in Alaska, drawn from the same CMS NPPES roster as Tan.
Dr. John Botson
M.D., RPH
Anchorage, AK
Dr. Summer Engler Jager
MD
Anchorage, AK
Dr. Elizabeth Ferucci
MD
Anchorage, AK
Dr. James Haigney
MD
Anchorage, AK
Dr. Javaneh Lyons
M.D.
Anchorage, AK
Compare Rheumatology 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 Alaska medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Rheumatology 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
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Virtual care options and coverage in 2026
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Frequently Asked Questions
What is Claribel Tan, M.D.'s specialty? ▼
Claribel Tan, M.D. specializes in Rheumatology Physician and practices in Anchorage, Alaska. Credentials: M.D..
How much does Claribel Tan, M.D. prescribe under Medicare Part D? ▼
In 2023, Claribel Tan, M.D. wrote 146 Medicare Part D claims totaling $130K in drug costs for 13 beneficiaries.
Where is Claribel Tan, M.D. located? ▼
Claribel Tan, M.D. is located at 2401 E 42ND AVENUE, Anchorage, AK, 99508. Phone: (907) 929-1859.
What is Claribel Tan, M.D.'s NPI number? ▼
Claribel Tan, M.D.'s National Provider Identifier (NPI) is 1649249483, issued on 03/15/2006.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Claribel Tan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Claribel Tan, M.D.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Otezla, Leflunomide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Claribel Tan, M.D. accept Medicare? ▼
Claribel Tan, M.D. appears in CMS Medicare data with 146 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Claribel Tan, M.D.'s credentials? ▼
Claribel Tan, M.D.'s NPI is 1649249483 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.