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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. DIANE HADDOCK M.D.
NPI 1013991553
Internal Medicine in Sacramento, CA

Active since November 29, 2005PECOS Enrolled
4150 V ST, #3116, SACRAMENTO, CA 95817(916) 734-7080 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Diane Haddock M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DIANE HADDOCK M.D. (NPI 1013991553) is an individual internal medicine provider in Sacramento, California, licensed in California (A88647) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with Univ. Of Vermont - Fletcher Allen Health Care, and is a graduate of University Of Vermont College Of Medicine (2003).

NPPES Registry Identity

NPI1013991553
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. DIANE HADDOCKCredential: M.D.
Location Address4150 V ST, #3116Sacramento, CA 95817-1460
Mailing Address4150 V St, #3116Sacramento, CA 95817-1460 · (916) 734-7080
Phone(916) 734-7080
Sole ProprietorNo
Medical School CMSUniversity Of Vermont College Of MedicineGraduated 2003
Enumeration DateNovember 29, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1013991553 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A88647
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4150 V ST, Sacramento, CA 95817
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Diane Haddock M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1850399320
PECOS Enrollment IDI20061116000232
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
103 services64 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
43 services43 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
42 services30 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
30 services30 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Univ. Of Vermont - Fletcher Allen Health Care

Acute Care Hospitals · Burlington, VT
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number470003
Location111 Colchester AveBurlington, VT 05401 · Chittenden County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95817 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$137.20 typical visit price
range $60.44 – $180.85
Typical copayment $34.30 (range $15.11 – $45.21)
Most-billed visit code 99204
Established Patient
$105.95 typical visit price
range $19.88 – $148.15
Typical copayment $26.48 (range $4.97 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KENNETH D. WHEELER CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. MICHAEL JOHN THORNTON MD
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3566
THOMAS M. GOODNOW CRNA
Nurse Anesthetist, Certified Registered
4150 V ST, PSSB-SUITE 1200, MED: ANESTHESIA
SACRAMENTO, CA 95817
Sacramento County (916) 734-7985
DR. POURIA KASHKOULI M.D.
Internal Medicine
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
DR. ALISON SEMRAD D.O.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
4150 V ST, #3116
SACRAMENTO, CA 95817
Sacramento County (916) 734-7080
JOHN S MILLAR M.D.
Internal Medicine (Critical Care Medicine)
4150 V ST, SUITE 3400
SACRAMENTO, CA 95817
Sacramento County (916) 734-3564
UC DAVIS
General Acute Care Hospital
4150 V ST, 2100
SACRAMENTO, CA 95817
Sacramento County (916) 734-8583
ADRIAN PALOMINO M.D.
Student in an Organized Health Care Education/Training Program
4150 V ST, SUITE 3100
SACRAMENTO, CA 95817
Sacramento County (530) 601-1165

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diane Haddock's NPI number?

The NPI number for Diane Haddock is 1013991553. It was assigned to this individual provider in the NPPES registry on November 29, 2005.

Where is Diane Haddock located?

Diane Haddock practices at 4150 V St #3116, Sacramento, CA 95817. The listed phone number is (916) 734-7080.

What is Diane Haddock's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Diane Haddock enrolled in Medicare?

Yes. Diane Haddock is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Diane Haddock accept?

Health plans from Anthem Blue Cross and Blue Shield list Diane Haddock as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Diane Haddock affiliated with any hospitals?

According to CMS data, Diane Haddock is affiliated with Univ. Of Vermont - Fletcher Allen Health Care.

When was this NPI record last updated?

The NPPES record for Diane Haddock was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.