2026 NPPES data Internal Medicine Physician NPI 1639103070 MD
Verify on CMS →

Glenda Malana, MD

Internal Medicine Physician in Ewa Beach, Hawaii. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in 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
621
Medicare Part D claims · 58 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Glenda Malana, MD filed 621 Medicare Part D claims in 2023 as a Internal Medicine Physician in Ewa Beach, Hawaii, prescribing 91% generic.

621
Part D claims, 2023
91%
generic prescribing

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.

Glenda Malana, MD's Medicare Part D volume vs every U.S. prescriber

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

621 Top 31% higher than 69% 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%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 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-eligible specialty (heuristic, not verified)

Glenda Malana, MD 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 Glenda Malana, MD?

Quality data not reported

NPI registry status

Active

Issued 07/10/2006

NPI 1639103070

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

621 77% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Hawaii

How Internal Medicine Physician compares to other specialties among Hawaii providers

Hawaii providers

Largest specialties in Hawaii (% of in-state providers)

Behavior Technician - 16.4%Behavior Technician16.4%Massage Therapist - 4.3%Massage Therapist4.3%Physical Therapist - 3.7%Physical Therapist3.7%Pharmacist - 3.7%Pharmacist3.7%Mental Health Counselor - 3.1%Mental Health Counselor3.1%Internal Medicine Physician - 3.1%Internal Medicine Physician3.1%
Largest specialties in Hawaii (% 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 Internal Medicine 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).

Glenda Malana, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 91-2139 FORT WEAVER RD STE 302, Ewa Beach, HI, 96706, with a listed phone of (775) 219-6855. NPI 1639103070 was issued on 07/10/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Malana 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 621 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $56K in drug spend, split 9% brand-name and 91% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

91-2139 FORT WEAVER RD STE 302
Ewa Beach, HI 96706

Provider Details

NPI 1639103070
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 07/10/2006

Brand vs generic prescribing mix · Generic-heavy

Glenda Malana, MD - brand share 9.0%
Internal Medicine Physician average

9% brand-name claims vs 91% generic, on 621 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.

621
Total Claims
$56K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,721
Total Day Supply
51,315
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$41K
Generic Drug Cost
$15K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.64
Gender Split
67% female / 33% male

Top Prescribed Drugs (Medicare Part D)

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

What Glenda Malana, 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
Atorvastatin Calcium
57
Losartan Potassium
54
Amlodipine Besylate
41
Rosuvastatin Calcium
36
Levothyroxine Sodium
35
Simvastatin
34
Alendronate Sodium
23
Allopurinol
22
Irbesartan
19
Metoprolol Succinate
17

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

Internal Medicine Physician Overview

How Glenda Malana, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Glenda Malana, MD's 621 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Hawaii

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

Compare Internal Medicine 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 Hawaii medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby 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.

Frequently Asked Questions

What is Glenda Malana, MD's specialty?
Glenda Malana, MD specializes in Internal Medicine Physician and practices in Ewa Beach, Hawaii. Credentials: MD.
How much does Glenda Malana, MD prescribe under Medicare Part D?
In 2023, Glenda Malana, MD wrote 621 Medicare Part D claims totaling $56K in drug costs for 58 beneficiaries.
Where is Glenda Malana, MD located?
Glenda Malana, MD is located at 91-2139 FORT WEAVER RD STE 302, Ewa Beach, HI, 96706. Phone: (775) 219-6855.
What is Glenda Malana, MD's NPI number?
Glenda Malana, MD's National Provider Identifier (NPI) is 1639103070, issued on 07/10/2006.
Does Glenda Malana, MD prescribe more brand-name or generic drugs?
Glenda Malana, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $41K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Glenda Malana, MD prescribe most often?
Based on 2023 Medicare Part D data, Glenda Malana, MD's most frequently prescribed drugs include Atorvastatin Calcium, Losartan Potassium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Glenda Malana, MD accept Medicare?
Glenda Malana, MD appears in CMS Medicare data with 621 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Glenda Malana, MD's credentials?
Glenda Malana, MD's NPI is 1639103070 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.