DR. MICHAEL GULLIVER ERKKINEN M.D.
NPI 1003179276
Psychiatry & Neurology - Neurology in Sacramento, CA

Q: What is Michael Erkkinen's NPI number?

The NPI number for Michael Erkkinen is 1003179276. It was assigned to this individual provider in the NPPES registry on June 21, 2012.

Q: What is Michael Erkkinen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: When was this NPI record last updated?

The NPPES record for Michael Erkkinen was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.

Active since June 21, 2012PECOS EnrolledAccepts Medicare Assignment

3160 FOLSOM BLVD STE 2100, SACRAMENTO, CA 95816(916) 734-3588 Get Directions Write a Review

NPPES record last updated: June 16, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 18, 2026, Oct 20, 2017, Sep 20, 2017 (3 updates tracked since 2017).

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About Dr. Michael Gulliver Erkkinen M.d. NPPES

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

DR. MICHAEL GULLIVER ERKKINEN M.D. (NPI 1003179276) is an individual neurology provider in Sacramento, California, licensed in California (A143213) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1003179276

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameDR. MICHAEL GULLIVER ERKKINENCredential: M.D.

Location Address3160 FOLSOM BLVD STE 2100Sacramento, CA 95816-5266

Mailing Address4860 Y St Ste 3700Sacramento, CA 95817-2307 · (916) 734-3588

Phone(916) 734-3588

Sole ProprietorNo

Medical School CMSGeisel School Of Medicine At DartmouthGraduated 2012

Enumeration DateJune 21, 2012

Last NPPES UpdateJune 16, 20263 updates tracked since enumeration

NPPES CertifiedJune 16, 2026

✔ NPI 1003179276 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in CA · A143213

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

3160 FOLSOM BLVD STE 2100, Sacramento, CA 95816

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Secondary Practice Location 1

Location 175 Francis StBoston, MA 02115-6110 · Phone (617) 732-5500

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Michael Gulliver Erkkinen 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 ID749428647

PECOS Enrollment IDI20160809000360, I20171003007755

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.

Medicare Billing Reassignments

Medicare enrollment records show Michael Erkkinen reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of California

Same address

Multi-Specialty

3160 FOLSOM BLVD STE 1400
Sacramento, CA 95816

Reassigned Medicare billing, California enrollment
918 clinicians in this Medicare group

NPI 1962482513 (916) 734-7777

Regents Of The University Of Ca

0.2 mi

Hematology & Oncology

1508 ALHAMBRA BLVD
Sacramento, CA 95816

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Regents Of The Univ Of Ca
2,570 clinicians in this Medicare group

NPI 1528051679 (916) 734-5803

University Of California San Francisco

77 mi

Surgery

400 PARNASSUS AVE, MCB 300
San Francisco, CA 94143

Reassigned Medicare billing, California enrollment
5,645 clinicians in this Medicare group

NPI 1346329380 (415) 353-2161

Ucsf Medical Group Business Services

77 mi

Internal Medicine

400 PARNASSUS AVE
San Francisco, CA 94122

Reassigned Medicare billing, California enrollment
5,544 clinicians in this Medicare group

NPI 1477624104 (415) 353-2808

Brigham & Womens Physicians Organization Inc

2,628 mi

Internal Medicine

75 FRANCIS ST
Boston, MA 02115

Reassigned Medicare billing, Massachusetts enrollment
4,574 clinicians in this Medicare group

NPI 1033535497 (617) 732-5500

Massachusetts General Physicians Organization Inc

2,630 mi

Dermatology

55 FRUIT ST, BUL 2
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,360 clinicians in this Medicare group

NPI 1801874573 (617) 724-0287

The General Hospital Corporation

2,630 mi

General Acute Care Hospital

55 FRUIT ST, BULFINCH 360
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,234 clinicians in this Medicare group

NPI 1023049236 (617) 726-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

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 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.

200 services169 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

110 services59 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

72 services44 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

64 services64 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

59 services59 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

51 services20 patients

Hospital Affiliations CMS Care Compare 3

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

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220071

Location55 Fruit StreetBoston, MA 02114 · Suffolk County

Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220110

Location75 Francis StreetBoston, MA 02115 · Suffolk County

Emergency services Birthing friendly

Faulkner Hospital-Brigham And Women's

Acute Care Hospitals · Boston, MA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220119

Location1153 Centre StreetBoston, MA 02130 · Suffolk County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95816 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.

DR. TYRELL JONATHAN SIMKINS D.O., PH.D.

Psychiatry & Neurology (Neurology)