The phrase "additionally certified" is correct and usable in written English.
You can use it when referring to someone or something that has received extra certification beyond the initial one.
Example: "The technician is additionally certified in advanced safety protocols, ensuring a higher standard of service."
Alternatives: "further certified" or "also certified".
"Irreplaceable" remained on the chart for thirty weeks, and was certified double-platinum by the Recording Industry Association of America RIAAA), denoting sales of two million downloads, It was additionally certified triple-platinum, denoting sales of three million master ringtones.
It was additionally certified platinum in Chile.
The record was additionally certified Gold in Colombia, Chile and Venezuela.
Most Feldenkrais practitioners were not additionally licensed or certified as traditional health care providers.
Additionally, trained and certified Health Records Technicians are responsible for coding diagnoses and procedures that are entered into the Hospital Inpatient database so information should be accurate.
Additionally, 13 trials were certified as potentially relevant and the authors were contacted for primary and supplementary information (see web extra).
Additionally, they recently required their suppliers to purchase certified conflict-free minerals when they become available on the world market.
MDFT is delivered by individual therapists who are part of teams of 3 - 5 CTRADA certified therapists, with one of them additionally serving as team supervisor.
Additionally, the models contain an interaction between the SO2 variable and each of three indicator variables for whether or not the winery is certified by one of three certifying agencies: FNIVAB, Demeter, or Biodyvin.
Under the Act's original framework, in any jurisdiction certified for federal examiners, the Attorney General could additionally require the appointment of "federal observers".
Additionally, because his Arabians were not shipped via Britain, they were not certified by the United Kingdom's Jockey Club before arriving in America, and without that authentication, the American Jockey Club refused to register his imported horses.
