2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1548452162 MD
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GABRIELA LOPERENA OROPEZA, MD

Endocrinology, Diabetes & Metabolism Physician in TACOMA, Washington. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 420 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
55%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.1K
21 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GABRIELA LOPERENA OROPEZA, MD filed 2,697 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in TACOMA, Washington, prescribing 55% generic.

3K
Part D claims, 2023
55%
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.

GABRIELA LOPERENA OROPEZA, MD's Medicare Part D volume vs every U.S. prescriber

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

2,697 Top 13% higher than 87% 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%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

GABRIELA LOPERENA OROPEZA, 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 GABRIELA LOPERENA OROPEZA, MD?

Quality data not reported

NPI registry status

Active

Issued 08/16/2007

NPI 1548452162

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

2,697 2% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Washington

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Washington providers

Washington providers

Endocrinology, Diabetes & Metabolism Physician share within Washington

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

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).

GABRIELA LOPERENA OROPEZA, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in TACOMA, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1548452162. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GABRIELA LOPERENA OROPEZA, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 1901 S CEDAR ST, TACOMA, WA, 98405, with a listed phone of (253) 301-6999. NPI 1548452162 was issued on 08/16/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LOPERENA OROPEZA 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 2,697 prescription claims written by this provider, covering 420 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 45% brand-name and 55% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

1901 S CEDAR ST
TACOMA, WA 98405

Provider Details

NPI 1548452162
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 08/16/2007

Hospital and facility affiliations

Facilities where GABRIELA LOPERENA OROPEZA, 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.

MULTICARE HEALTH SYSTEM
TACOMA, WA

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 GABRIELA LOPERENA OROPEZA, MD. Source: openpaymentsdata.cms.gov.

Total received

$1.1K

Largest payer

Medtronic, Inc.

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 — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to GABRIELA LOPERENA OROPEZA, MD. To verify GABRIELA LOPERENA OROPEZA, MD's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

GABRIELA LOPERENA OROPEZA, MD — brand share 45.0%
Specialty average (est.)

45% brand-name claims vs 55% generic, on 2,697 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.

2,697
Total Claims
$1.2M
Total Drug Cost
420
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
6,257
Total Day Supply
185,724
Brand vs Generic
45% brand / 55% generic
Brand Drug Cost
$1.1M
Generic Drug Cost
$45K

Patient Demographics

Average Patient Age
70.2 years
Avg HCC Risk Score
1.51
Gender Split
77% female / 23% male
Age Distribution
<65: 68, 65-74: 214, 75-84: 112, 85+: 26

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
635
Synthroid
Levothyroxine Sodium
114
Metformin Hcl
106
Methimazole
82
Metformin Hcl Er
Metformin Hcl
74
Atorvastatin Calcium
65
Cinacalcet Hcl
65
Hydrocortisone
57
Trulicity
Dulaglutide
47
Alendronate Sodium
46

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

Endocrinology, Diabetes & Metabolism Physician Overview

How GABRIELA LOPERENA OROPEZA, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

GABRIELA LOPERENA OROPEZA, MD's 2,697 claims are above the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Washington

Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as LOPERENA OROPEZA.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GABRIELA LOPERENA OROPEZA, MD's specialty?
GABRIELA LOPERENA OROPEZA, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in TACOMA, Washington. Credentials: MD.
How much does GABRIELA LOPERENA OROPEZA, MD prescribe under Medicare Part D?
In 2023, GABRIELA LOPERENA OROPEZA, MD wrote 2,697 Medicare Part D claims totaling $1.2M in drug costs for 420 beneficiaries.
Where is GABRIELA LOPERENA OROPEZA, MD located?
GABRIELA LOPERENA OROPEZA, MD is located at 1901 S CEDAR ST, TACOMA, WA, 98405. Phone: (253) 301-6999.
What is GABRIELA LOPERENA OROPEZA, MD's NPI number?
GABRIELA LOPERENA OROPEZA, MD's National Provider Identifier (NPI) is 1548452162, issued on 08/16/2007.
Does GABRIELA LOPERENA OROPEZA, MD prescribe more brand-name or generic drugs?
GABRIELA LOPERENA OROPEZA, MD's prescribing is 45% brand-name and 55% generic drugs by claim count, with $1.1M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does GABRIELA LOPERENA OROPEZA, MD prescribe most often?
Based on 2023 Medicare Part D data, GABRIELA LOPERENA OROPEZA, MD's most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GABRIELA LOPERENA OROPEZA, MD accept Medicare?
GABRIELA LOPERENA OROPEZA, MD appears in CMS Medicare data with 2,697 Part D claims and 420 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GABRIELA LOPERENA OROPEZA, MD's credentials?
GABRIELA LOPERENA OROPEZA, MD's NPI is 1548452162 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