NPI registry status
Active
2026 NPPES data Geriatric Medicine (Internal Medicine) Physician NPI 1881661536 M.D.
Verify on CMS → Paulo Guillinta, M.D.
Geriatric Medicine (Internal Medicine) Physician in Chula Vista, 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 4,171 in Geriatric Medicine (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
4K
Medicare Part D claims · 660 beneficiaries · Geriatric Medicine (Internal Medicine) Physician avg: 4K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.0K
38 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Paulo Guillinta, M.D. filed 3,712 Medicare Part D claims in 2023 as a Geriatric Medicine (Internal Medicine) Physician in Chula Vista, California, prescribing 75% generic.
- 4K
- Part D claims, 2023
- 75%
- 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.
Paulo Guillinta, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,712 Top 9% higher than 91% 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 certification likely (heuristic, not verified)
Paulo Guillinta, M.D. 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 Paulo Guillinta, M.D.?
Quality data not reportedPrimary specialty
Geriatric Medicine (Internal Medicine) Physician
Medicare Part D claims
3,712 17% vs specialty avg
Specialty distribution in California
How Geriatric Medicine (Internal Medicine) 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 Geriatric Medicine (Internal Medicine) 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).
Paulo Guillinta, M.D. appears in the CMS NPPES registry as a Geriatric Medicine (Internal Medicine) Physician provider holding M.D. credentials at 525 3RD AVE, Chula Vista, CA, 91910, with a listed phone of (619) 585-4304. NPI 1881661536 was issued on 03/01/2006.
Medicare Part D records for calendar year 2023 show 3,712 prescription claims written by this provider, covering 660 Medicare beneficiaries and totaling roughly $1.2 million in drug spend, split 25% brand-name and 75% generic by claim count.
Geriatric Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 4,171 enrolled providers across 52 states and an average of 4,450 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 | 1881661536 |
|---|---|
| Specialty | Geriatric Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/01/2006 |
Hospital and facility affiliations
Facilities where Paulo Guillinta, M.D. 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.
Sharp Rees-Stealy Medical Group Inc
Chula Vista, 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 Paulo Guillinta, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$3.0K
Largest payer
Abbott Laboratories
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 Paulo Guillinta, M.D.. To verify Paulo Guillinta, M.D.'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 · Above average
Paulo Guillinta, M.D. - brand share 25.0%
Geriatric Medicine (Internal Medicine) Physician average
25% brand-name claims vs 75% generic, on 3,712 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.
3,712
Total Claims
$1.2M
Total Drug Cost
660
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,904
- Total Day Supply
- 295,923
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $1.1M
- Generic Drug Cost
- $85K
Patient Demographics
- Average Patient Age
- 76.8 years
- Avg HCC Risk Score
- 2.04
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 26, 65-74: 256, 75-84: 236, 85+: 142
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Paulo Guillinta, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
306 claims
- Atorvastatin Calcium
Atorvastatin Calcium
272 claims
- Eliquis
Eliquis
252 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
247 claims
- Furosemide
Furosemide
239 claims
- Spironolactone
Spironolactone
213 claims
- Jardiance
Jardiance
185 claims
- Losartan Potassium
Losartan Potassium
152 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 306 |
| Atorvastatin Calcium | 272 |
| Eliquis Apixaban | 252 |
| Rosuvastatin Calcium | 247 |
| Furosemide | 239 |
| Spironolactone | 213 |
| Jardiance Empagliflozin | 185 |
| Losartan Potassium | 152 |
| Carvedilol | 142 |
| Clopidogrel Clopidogrel Bisulfate | 121 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Geriatric Medicine (Internal Medicine) Physician in CA →
All providers in California →
Compare specialties →
Geriatric Medicine (Internal Medicine) Physician Overview
How Paulo Guillinta, M.D. fits within the Geriatric Medicine (Internal Medicine) Physician landscape nationally.
4,171
Geriatric Medicine (Internal Medicine) Physician Providers in US
52
States with Geriatric Medicine (Internal Medicine) Physician
4,450
Avg Claims per Provider
Paulo Guillinta, M.D.'s 3,712 claims are below the specialty average of 4,450.
Nearby Geriatric Medicine (Internal Medicine) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Guillinta.
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 Geriatric Medicine (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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Paulo Guillinta, M.D.'s specialty? ▼
Paulo Guillinta, M.D. specializes in Geriatric Medicine (Internal Medicine) Physician and practices in Chula Vista, California. Credentials: M.D..
How much does Paulo Guillinta, M.D. prescribe under Medicare Part D? ▼
In 2023, Paulo Guillinta, M.D. wrote 3,712 Medicare Part D claims totaling $1.2M in drug costs for 660 beneficiaries.
Where is Paulo Guillinta, M.D. located? ▼
Paulo Guillinta, M.D. is located at 525 3RD AVE, Chula Vista, CA, 91910. Phone: (619) 585-4304.
What is Paulo Guillinta, M.D.'s NPI number? ▼
Paulo Guillinta, M.D.'s National Provider Identifier (NPI) is 1881661536, issued on 03/01/2006.
Does Paulo Guillinta, M.D. prescribe more brand-name or generic drugs? ▼
Paulo Guillinta, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $1.1M in brand drug costs.
How many Geriatric Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 4,171 Geriatric Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Geriatric Medicine (Internal Medicine) Physician provider writes 4,450 Medicare Part D claims per year.
What drugs does Paulo Guillinta, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Paulo Guillinta, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Atorvastatin Calcium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Paulo Guillinta, M.D. accept Medicare? ▼
Paulo Guillinta, M.D. appears in CMS Medicare data with 3,712 Part D claims and 660 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Paulo Guillinta, M.D.'s credentials? ▼
Paulo Guillinta, M.D.'s NPI is 1881661536 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.
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 May 2026.