NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1316024920 MD
Verify on CMS → Soo Eng, MD
Endocrinology, Diabetes & Metabolism Physician in Mountain View, 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 7,871 in Endocrinology, Diabetes & Metabolism 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
819
Medicare Part D claims · 246 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
70%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Soo Eng, MD filed 819 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Mountain View, California, prescribing 70% generic.
- 819
- Part D claims, 2023
- 70%
- 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.
Soo Eng, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
819 Top 27% higher than 73% 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)
Soo Eng, 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 Soo Eng, MD?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
819 69% vs specialty avg
Specialty distribution in California
How Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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).
Soo Eng, MD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 2204 GRANT RD, Mountain View, CA, 94040, with a listed phone of (650) 967-8841. NPI 1316024920 was issued on 11/01/2006.
Medicare Part D records for calendar year 2023 show 819 prescription claims written by this provider, covering 246 Medicare beneficiaries and totaling roughly $229K in drug spend, split 22% brand-name and 70% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 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
Provider Details
| NPI | 1316024920 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 11/01/2006 |
Hospital and facility affiliations
Facilities where Soo Eng, 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.
Permanente Medical Group Inc
Santa Clara, 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 Soo Eng, MD. To verify Soo Eng, 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.
Brand vs generic prescribing mix · Typical
Soo Eng, MD - brand share 22.0%
Endocrinology, Diabetes & Metabolism Physician average
22% brand-name claims vs 70% generic, on 819 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.
819
Total Claims
$229K
Total Drug Cost
246
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,242
- Total Day Supply
- 66,855
- Brand vs Generic
- 22% brand / 70% generic
- Brand Drug Cost
- $204K
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 75.4 years
- Avg HCC Risk Score
- 1.18
- Gender Split
- 76% female / 24% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Soo Eng, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methimazole
Methimazole
253 claims
- Alendronate Sodium
Alendronate Sodium
115 claims
- Levothyroxine Sodium 73
Levothyroxine Sodium
73 claims
- Forteo 45
Forteo
45 claims
- Hydrocortisone 37
Hydrocortisone
37 claims
- Victoza 2-Pak 26
Victoza 2-Pak
26 claims
- Testosterone 16
Testosterone
16 claims
- Cabergoline 15
Cabergoline
15 claims
| Drug | Claims |
|---|---|
| Methimazole | 253 |
| Alendronate Sodium | 115 |
| Levothyroxine Sodium | 73 |
| Forteo Teriparatide | 45 |
| Hydrocortisone | 37 |
| Victoza 2-Pak Liraglutide | 26 |
| Testosterone | 16 |
| Cabergoline | 15 |
| Humalog Kwikpen U-100 Insulin Lispro | 11 |
| Sandostatin Lar Depot "Octreotide Acetate | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in CA →
All providers in California →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Soo Eng, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Soo Eng, MD's 819 claims are below the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Eng.
Dr. Anita Abraham
M.D.
Stockton, CA
Dr. Sallie Adams
M.D.
Roseville, CA
Ananta Addala
Palo Alto, CA
Dr. Helen Adelberg
M.D.
Encino, CA
Dr. David Aftergood
MD
Beverly Hills, CA
Compare Endocrinology, Diabetes & Metabolism 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Endocrinology, Diabetes & Metabolism 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.
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Frequently Asked Questions
What is Soo Eng, MD's specialty? ▼
Soo Eng, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Mountain View, California. Credentials: MD.
How much does Soo Eng, MD prescribe under Medicare Part D? ▼
In 2023, Soo Eng, MD wrote 819 Medicare Part D claims totaling $229K in drug costs for 246 beneficiaries.
Where is Soo Eng, MD located? ▼
Soo Eng, MD is located at 2204 GRANT RD, Mountain View, CA, 94040. Phone: (650) 967-8841.
What is Soo Eng, MD's NPI number? ▼
Soo Eng, MD's National Provider Identifier (NPI) is 1316024920, issued on 11/01/2006.
Does Soo Eng, MD prescribe more brand-name or generic drugs? ▼
Soo Eng, MD's prescribing is 22% brand-name and 70% generic drugs by claim count, with $204K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 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 Soo Eng, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Soo Eng, MD's most frequently prescribed drugs include Methimazole, Alendronate Sodium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Soo Eng, MD accept Medicare? ▼
Soo Eng, MD appears in CMS Medicare data with 819 Part D claims and 246 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Soo Eng, MD's credentials? ▼
Soo Eng, MD's NPI is 1316024920 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.
- 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.