NPI registry status
Active
2026 NPPES data Hospice and Palliative Medicine (Internal Medicine) Physician NPI 1841786274 MD
Verify on CMS → Karolina Grekov, MD
Hospice and Palliative Medicine (Internal Medicine) Physician in Palo Alto, 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 1,637 in Hospice and Palliative 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.
What the federal data shows
Karolina Grekov, MD is a Hospice and Palliative Medicine (Internal Medicine) Physician in Palo Alto, California, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #203
- Hospice and Palliative Medicine (Internal Medicine) Physician rank among California specialties
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 Karolina Grekov, MD
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1841786274), first enumerated 07/09/2018.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
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
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Karolina Grekov, 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 Grekov with other Hospice and Palliative Medicine (Internal Medicine) Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Marietta Abalos-Galito, M.D. San Jose, CA
- Dr. Sam Ahdab, M.D. West Covina, CA
- Dr. Patrick Joseph Alix, MD Glendora, CA
- Dr. Jaime Altamirano, M.D. Mission Hills, CA
- Dr. Vishar Amin, M.D. San Diego, CA
- Dr. Mohammed Iqbal Ansari, MD Buena Park, CA
Other specialties in Palo Alto: Student in an Organized Health Care Education/Training Program (762) · Pediatrics Physician (672) · Pharmacist (259) · Internal Medicine Physician (248)
CMS NPPES provider registry desk
NPI 1841786274 · Hospice and Palliative Medicine (Internal Medicine) Physician
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1841786274
- ENUM-RECENT 2018
- TAX-NARROW 1,637
- RX-NONE No Part D
- BOOK-THIN 193 in California
- PHOTO-ENUM Lauren Sigler, MD · 2018
✓
Board certification likely (heuristic, not verified)
Karolina Grekov, 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 Karolina Grekov, MD?
Quality data not reportedPrimary specialty
Hospice and Palliative Medicine (Internal Medicine) Physician
Specialty distribution in California
How Hospice and Palliative 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 Hospice and Palliative 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).
Practice Address
Provider Details
| NPI | 1841786274 |
|---|---|
| Specialty | Hospice and Palliative Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/09/2018 |
Hospital and facility affiliations
Facilities where Karolina Grekov, 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.
Lpch Medical Group Div OF Lucile
Palo Alto, 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).
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 Karolina Grekov, MD. To verify Karolina Grekov, 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.
More Hospice and Palliative Medicine (Internal Medicine) Physician in CA →
All providers in California →
Compare specialties →
Hospice and Palliative Medicine (Internal Medicine) Physician Overview
How Karolina Grekov, MD fits within the Hospice and Palliative Medicine (Internal Medicine) Physician landscape nationally.
1,637
Hospice and Palliative Medicine (Internal Medicine) Physician Providers in US
51
States with Hospice and Palliative Medicine (Internal Medicine) Physician
1,322
Avg Claims per Provider
Nationwide Hospice and Palliative Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Grekov, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Hospice and Palliative 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 Grekov.
One of 193 Hospice and Palliative Medicine (Internal Medicine) Physician providers enrolled in California, 11 are shown on this page.
Frequently Asked Questions
What is Karolina Grekov, MD's specialty? ▼
Karolina Grekov, MD specializes in Hospice and Palliative Medicine (Internal Medicine) Physician and practices in Palo Alto, California. Credentials: MD.
Where is Karolina Grekov, MD located? ▼
Karolina Grekov, MD is located at 725 WELCH RD, Palo Alto, CA, 94304. Phone: (650) 497-8000.
What is Karolina Grekov, MD's NPI number? ▼
Karolina Grekov, MD's National Provider Identifier (NPI) is 1841786274, issued on 07/09/2018.
How many Hospice and Palliative Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 1,637 Hospice and Palliative Medicine (Internal Medicine) Physician providers across 51 states in the US. The average Hospice and Palliative Medicine (Internal Medicine) Physician provider writes 1,322 Medicare Part D claims per year.
Does Karolina Grekov, MD accept Medicare? ▼
Karolina Grekov, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karolina Grekov, MD's credentials? ▼
Karolina Grekov, MD's NPI is 1841786274 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.
- 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.