Dr. Mitzi Johnson , MD
Pediatrics • Braintree, MA
111 Grossman Dr
Braintree, MA 021844997
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 9, 2007; this date does not establish years in practice.
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Published CMS data list 204 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 73 service units.
- 99203 — New patient outpatient office visit: 57 service units.
- 87804 — Detection test by immunoassay with direct visual observation for influenza virus: 22 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 64 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Prednisone — 18 prescription fills, including refills.
- Doxycycline Hyclate — 18 prescription fills, including refills.
- Cephalexin — 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Pediatrics in Massachusetts (2024, 53 clinicians with data). Median for this group: 234. Middle half: 133 to 412.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 175 in 2020 to 204 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
111 Grossman Dr
Braintree, MA 021844997
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Springfield, MA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
136 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $14,446 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $10,445 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
64 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$417 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Johnson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Johnson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Braintree and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Pediatrics in Massachusetts (2024, 53 clinicians with data). Median for this group: 234. Middle half: 133 to 412.
Too few clinicians listed under Pediatrics in Braintree have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Pediatrics in Massachusetts (2024, 53 clinicians with data). Median for this group: $22,145. Middle half: $13,620 to $40,076.
Too few clinicians listed under Pediatrics in Braintree have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Pediatrics in Massachusetts (2024, 53 clinicians with data). Median for this group: $14,316. Middle half: $10,445 to $31,409.
Too few clinicians listed under Pediatrics in Braintree have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Pediatrics in Massachusetts (2024, 85 clinicians with data). Median for this group: 59. Middle half: 22 to 1,036.
Too few clinicians listed under Pediatrics in Braintree have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 70% of clinicians listed under Pediatrics in Massachusetts (2024, 85 clinicians with data). Median for this group: $6,635. Middle half: $334 to $88,942.
Too few clinicians listed under Pediatrics in Braintree have Medicare Part D data for 2024 to compare.
17 active clinicians are listed under Pediatrics with a practice address in Braintree, MA (2,628 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Braintree
0% of these 17 clinicians have the CMS telehealth indicator.
11.8% of these 17 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 17% from 175 in 2020 to 204 in 2024.
- 2020: 175
- 2021: 241
- 2022: 241
- 2023: 162
- 2024: 204
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Medicare-allowed amount
Medicare-allowed amount stayed about the same: $15,921 in 2020 and $14,446 in 2024.
- 2020: $15,921
- 2021: $19,004
- 2022: $18,260
- 2023: $14,020
- 2024: $14,446
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Paid by Medicare
Paid by Medicare varied from year to year: $9,932 in 2020 and $10,445 in 2024.
- 2020: $9,932
- 2021: $15,681
- 2022: $14,519
- 2023: $8,886
- 2024: $10,445
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 35% from 98 in 2020 to 64 in 2024.
- 2020: 98
- 2021: 49
- 2022: 82
- 2023: 99
- 2024: 64
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30-day fills
30-day fills decreased 35% from 98 in 2020 to 64 in 2024.
- 2020: 98
- 2021: 49
- 2022: 82
- 2023: 99
- 2024: 64
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Part D drug cost
Part D drug cost decreased 58% from $1,004 in 2020 to $417 in 2024.
- 2020: $1,004
- 2021: $470
- 2022: $565
- 2023: $552
- 2024: $417
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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73 | 72 | $225.00 | $90.45 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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57 | 57 | $240.00 | $112.92 |
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87804
Detection test by immunoassay with direct visual observation for influenza virus
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22 | 11 | $51.91 | $16.22 |
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81003
Automated urinalysis test
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20 | 20 | $31.00 | $2.20 |
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87811
Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19)
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20 | 20 | $80.00 | $40.55 |
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87880
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
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12 | 12 | $51.33 | $16.20 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 18 | 121 | $24.70 | 18 |
| Doxycycline Hyclate | Doxycycline Hyclate | 18 | 147 | $111.93 | 18 |
| Cephalexin | Cephalexin | 14 | 110 | $106.87 | 14 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 14 | 98 | $173.43 | 14 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-09-20NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PEDIATRIC MEDICINE
I20050608000054
MA
0143263459
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
430 Cooley St
Springfield, MA 011281180
Phone: 4137820320
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner (Certified)
Pediatrics
Doctor of Medicine (M.D.)
Pediatrics
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 111 GROSSMAN DR, BRAINTREE, MA 021844997 (Tel: 7818492300)
Registered at 111 GROSSMAN DR, BRAINTREE, MA 021844997 (Tel: 7818492300)
General Practice (license number reported to NPPES: MA 59642)
NPI status registered as active in NPPES database
Registered at 294 PLEASANT ST, SUITE 201, STOUGHTON, MA 020722571 (Tel: 7813440720)
Registered at 294 PLEASANT ST, SUITE 201, STOUGHTON, MA 020722571 (Tel: 7813440720)
Recorded as MITZI JOHNSON, MD
Pediatrics (license number reported to NPPES: MA 59642)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in Braintree
Healthcare providers in BraintreeMailing Address
111 Grossman Dr
Braintree, MA 021844997
Phone: 7818492300